Coordinated video streaming and messaging using a wrist-wearable device and a head-worn wearable device, and methods of use thereof

ABSTRACT

Systems and methods are provided for coordinated video streaming and messaging using a wrist-wearable device and a head-worn wearable device. The method includes receiving an instruction to use a camera of a head-worn wearable device to capture video data. The method further includes, after receiving the instruction to use the camera of the head-worn wearable device to capture the video data, receiving, at a wrist-wearable device that is in communication with the head-worn wearable device, electronic messages from a viewer of the video stream and monitoring sensor data indicating one or both of a position of the head-worn wearable device and (ii) a position of the wrist-wearable device to determine when to display the electronic messages. The method also includes, in accordance with a determination that the sensor data indicates that a message-viewing precondition is present, displaying the electronic messages from the viewer of the video stream.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. Prov. App. No. 63/307,624,filed on Feb. 7, 2022, and entitled “Wrist-Wearable Device ForAutomatically Switching Between Video And Other Calling Modes Based OnSensor Data, Head-Worn Wearable Device For Coordinated Video CapturingAnd Presentation With The Wrist Wearable Device, And Methods Of UseThereof”; U.S. Prov. App. No. 63/254,498, filed on Oct. 11, 2021, andentitled “Wearable Devices For Automatically Switching Between Video AndOther Modes Based On Sensor Data And For Coordinated Video CapturingBetween Wrist And Head-Worn Wearable Devices, And Methods Of UseThereof”; U.S. Prov. App. No. 63/223,939, filed on Jul. 20, 2021, andentitled “Wrist-Wearable Devices For Automatically Switching BetweenVideo And Audio Calling Modes At The Wrist-Wearable Device Based OnSensor Data, And Methods Of Use Thereof”; and U.S. Prov. App. No.63/176,839, filed on Apr. 19, 2021, and entitled “Wrist-Wearable DevicesFor Automatically Switching Between Video And Audio Calling Modes At TheWrist-Wearable Device Based On Sensor Data, And Methods Of Use Thereof”;each of which is incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates generally to wearable devices and methodsfor video calling, more particularly, to wrist-wearable devicesconfigured to seamlessly and automatically switch (e.g., without a userrequest to do the switching) between video and other calling modes(e.g., audio-only calling modes or other modes in which a camera and/orother components of another device, such as a head-worn wearable device,are used in conjunction with the video call) at a wrist-wearable devicethat includes a video camera based on sensor data from thewrist-wearable device.

The present disclosure also relates generally to head-worn wearabledevices and wrist-wearable devices that coordinate during capturing ofvideo to (i) create coordinate video data (e.g., video data that iscombined based on video captured by both the wrist-wearable device andthe head-worn wearable device) and/or (ii) to determine when to ceasecapturing video data based on sensor data at one or both of a head-worndevice and/or a wrist-wearable device (e.g., to allow for capturingvideo at the head-worn wearable device and then seamlessly switching toview the captured video at the wrist-wearable device once a user looksdown towards the wrist-wearable device).

BACKGROUND

Computing devices, such as computers, phones, and tablets, are commonlyused to send and receive video calls. These computing devices can belarge requiring a user to hold the device using one hand or both hands,and/or may require that the user be at some stationary location duringthe video call. Additionally, due to the high temperatures and highenergy usage that can result from long video calls, computing devicescan require dedicated power sources (e.g., a wall outlet, largebatteries, etc.) or dedicated cooling solutions (e.g., fans, heatsinks,etc.) to maintain the video calls for long periods of times. For atleast these reasons, current computing devices are not well suited forhands-free, on-the-go, multitasking situations (e.g., shopping, walking,hiking, chores, cooking, etc.). Further, current audio and videocapabilities have not been extended or successfully implemented inmass-market, consumer wrist-wearable devices.

Techniques for seamlessly capturing video using one device and thenswitching to view that video at another device are also inadequate asrequiring direct user intervention at multiple points in the process(e.g., a user has to request to start recording, request to stoprecording, request to send the video to another device, and request toview the video at the other device after it has been sent), therebywasting time and creating user dissatisfaction with such inefficient usecases. Likewise, techniques for seamlessly capturing video data usingtwo different devices and then, automatically and without userintervention, combining the video data captured by two different devicesinto coordinated video data are also inefficient and wasteful.

As such, there is a need for extending video and audio capabilities towrist-wearable devices for a hands-free experience that easily andautomatically switches between video and other calling modes. There isalso a need for seamless video-capturing techniques that are efficientlydesigned and allow for seamless coordination between more than onedevice.

SUMMARY

The wrist-wearable devices, head-worn wearable devices, and methods ofuse thereof (as well as system including both devices) described hereinaddress one or more of the above-mentioned drawbacks by seamlessly andautomatically switching (e.g., without a user request to do theswitching) between video and other calling modes (e.g., an audio-onlymode or a mode in which components of a head-worn wearable device areusing during a video calling instead of components of a wrist-wearabledevice) at the wrist-wearable device, and by seamlessly andautomatically switching between whether the wrist-wearable device sendsvideo and audio data, or audio-only data to remote user devices (e.g.,counterpart devices during an ongoing video call). The wrist-wearabledevices, head-worn wearable devices, and methods of operation thereofdescribed herein use data from sensors (e.g., data from one or moreinertial measurement units, data from one or more proximity sensors,data from one or more capacitive sensors, data from one or morehall-effect sensors, etc.) to determine whether video-viewing andvideo-capturing preconditions are present at one or both of thewrist-wearable device and the head-worn wearable device, in conjunctionwith performance of the automatic switching operations. As one example,the wrist-wearable devices and methods described herein determinewhether data from one or more sensors at the wrist-wearable deviceindicates that a video-viewing precondition (e.g., a precondition thatmust be satisfied before video data is presented at the wrist-wearabledevice, e.g., in conjunction with an ongoing video call at thewrist-wearable device but non-video-calling examples also make use ofvideo-viewing preconditions as is further explained below) is present atthe wrist-wearable device, and if it is determined that thevideo-viewing precondition is not present at the wrist-wearable device,only present audio data. In these cases, the video call will act as anaudio call, or a phone call only (i.e., the device automatically wouldswitch from a video-calling mode to this other calling mode, which inthis case is an audio-only calling mode). In the example audio-callingmode, if it is determined that the wrist-wearable device is coupled witha head-worn wearable device, a speaker and/or microphone of thehead-worn wearable device can be used as alternatives to, or in additionto, a speaker and/or microphone of the wrist-wearable device.Alternatively, if it is determined that the video-viewing preconditionis present at the wrist-wearable device, the wrist-wearable device wouldpresent both video and audio data.

In this way (and also by similarly making use of a video-capturingprecondition, example uses of which are described in detail below), thewrist-wearable devices and head-worn wearable devices extend theiroverall battery life, make efficient use of limited CPU resources, andmaintain low operating temperatures that do not thermally throttle theprocessors of the wrist-wearable devices 102 or become uncomfortable (orphysically dangerous) for the user to wear while in use. For example, aprecondition (video-viewing and/or video-capturing precondition) can bea minimum battery life required for the presentation and/or sending ofvideo data. Alternatively, or in addition, a precondition (video-viewingand/or video-capturing precondition) can be an input-power requirement(or once a threshold is reached, the power requirement limit has beenreached). An example of an input-power requirement can be a minimum ormaximum amount of energy being drawn from a battery, or designated powermodes (e.g., device operating in low-power modes, standard-power mode,or high-power mode). Alternatively, or in addition, a precondition(video-viewing and/or video-capturing precondition) can be amaximum-temperature requirement, in which once the maximum temperatureof the wrist-wearable device is reached, the video will shut off andonly audio data will be presented and captured (similar behavior canoccur for the head-worn wearable device as well). As one additionalexample, a precondition (video-viewing and/or video-capturingprecondition) can be associated with whether the user's arm or wrist isin a particular position (e.g., lowered arm causes video presentationand capturing to be disabled; while raised arm causes enabling of videopresentation and capturing).

Further, the wrist-wearable devices described herein improve users'daily activities and productivity by providing a compact, hands-freecomputing system including a display that can be worn throughout theusers' day without inconveniencing the users or restricting theirmovements (and thus making it easier to interact with their physical andartificial environments in tandem with (as a complement to everydaylife). For example, the wrist-wearable devices and methods describedherein, in one embodiment, provide improved techniques for hands-freevideo calling that do not inconvenience or hamper on-the-go,multitasking situations (e.g., shopping, walking, hiking, chores,cooking, etc.) in which video calling can now be performed in ahands-free fashion that still remains safe and is performed in a waythat does not exhaust power and processing resources of a wrist-wearabledevice as the user goes about their day.

To help further the above goals, and as was briefly noted above, someembodiments described herein also make use of components of otherwearable devices, such as a head-worn device (e.g., smart glasses orvirtual reality headset), including speaker, microphone, and/or cameraof these other wearable devices to allow for seamlessly switchingbetween use of such components at the wrist-wearable or at the otherwearable devices. For instance, in some embodiments, once thevideo-capturing precondition is no longer present at the wrist-wearabledevice (causing capturing of video using a camera of the wrist-wearabledevice to cease in accordance with some embodiments), a camera of ahead-worn device that is communicatively coupled to the wrist-wearabledevice can instead be used. This is explained in further detail below.

As is also explained in further detail below, the techniques describedherein (and, in particular, use of video-viewing and video-capturingpreconditions) apply outside of the example context of video calls. Asone example, some techniques described herein are able to switch betweenmaking use of a camera at a head-worn device and a camera at awrist-wearable device to record video content in a seamless fashiondepending, in part, on presence or absence of a video-viewingprecondition at the wrist-wearable device and/or a presence or absenceof a video-capturing precondition at the head-worn wearable device.Additionally, some techniques described herein are also able to allowfor recording video using a camera of a head-worn device and thenceasing to record the video using the camera of the head-worn deviceonce a video-viewing precondition is present at the wrist-wearabledevice (e.g., while the video-viewing precondition is not present at thewrist-wearable device because the wrist-wearable device is in a loweredposition, the camera of the head-worn device can be used to capturevideo content; once the video-viewing precondition is again present atthe wrist-wearable device, then the video content can ceased to berecorded using the camera of the head-worn wearable device and thedisplay of the wrist-wearable device can then be used to display thevideo content that was recorded using the camera of the head-worndevice). Additional example techniques (including ones involvingcreating coordinated video data using video data captured by both thewrist-wearable device and head-worn wearable device, where the capturingusing the cameras of the different devices at different points in timecan occur without any express user instruction to cause the switchingbetween use of the different cameras and the combining to create thecoordinated video data) and a more detailed description is providedbelow. Moreover, the video-viewing and video-capturing preconditionsdescribed herein can be device-specific preconditions, such that avideo-viewing precondition for a first type of device (e.g., awrist-wearable device) can be different from a video-capturingprecondition for a second type of device (e.g., a head-worn wearabledevice). Additionally, video-viewing or video-capturing preconditions,in certain embodiments or circumstances can also be defined based onsensor data for two different devices (e.g., a video-viewingprecondition that is only present based on a determination that ahead-worn wearable device is facing toward the ground and that awrist-wearable device is in a raised position), such that in thesecertain embodiments or circumstances the video-viewing and/orvideo-viewing preconditions can be combined preconditions that takeconditions at multiple devices into account in determining whether thecombined preconditions are satisfied.

The first summarized example (A1-E1) below relates to switching betweenvideo calling (e.g., a mode in which a wrist-wearable device presentsvideo and audio data to a user in conjunction with a video call) andother calling modes (e.g., an audio-only calling mode in which thewrist-wearable device presents only audio data and not video data, ormodes in which components of a head-worn wearable device are used topresent video and/or audio data for the video call) based on sensor datafor a wrist-wearable device. Other examples then follow, including onesrelated to contexts other than video calling.

(A1) In accordance with some embodiments, a method of video calling at awrist-wearable device is provided. The method includes receiving videodata and audio data at a wrist-wearable device that has one or moresensors. The video data and audio data are associated with a video callbetween a user of the wrist-wearable device and at least one other userdistinct from the user. The method further includes, while causing thepresentation of the video data via a display of the wrist-wearabledevice and the audio data via a speaker that is in communication withthe wrist-wearable device, determining whether sensed data from the oneor more sensors indicates that a video-viewing precondition is presentat the wrist-wearable device. In accordance with a determination thatthe video-viewing precondition is not present at the wrist-wearabledevice, the method includes continuing to cause presentation of theaudio data via the speaker that is in communication with thewrist-wearable device and ceasing to cause presentation of the videodata via the display of the wrist-wearable device.

(A2) In some embodiments of A1, the method further includes whilecontinuing to cause presentation of the audio data via the speaker thatis in communication with the wrist-wearable device and whilepresentation of the video data via the display of the wrist-wearabledevice is ceased, a determination will be made whether sensed data fromthe one or more sensors indicates that the video-viewing precondition ispresent at the wrist-wearable device. In accordance with a determinationthat the video viewing precondition is present at the wrist wearabledevice, the method includes causing presentation of the audio data viathe speaker that is in communication with the wrist-wearable device andvideo data via the display of the wrist-wearable device. In other words,the wrist-wearable device is able to seamlessly and automatically switchback and forth between video and other calling modes (e.g., switching toan audio calling mode by using sensor data alone and without requiringan express request from a user to switch between the video and audiocalling modes, and then switching back to a video calling modes when thevideo-viewing precondition is again present at the wrist-wearabledevice).

(A3) In some embodiments of any of A1-A2, the one or more sensorsinclude an inertial measurement unit and the sensed data from the one ormore sensors includes sensed data from the inertial measurement unitthat allows one or more processors of the wrist-wearable device todetermine a position and/or orientation of the wrist-wearable devicewhile it is worn on a wrist of the user. Further, determining whetherthe video-viewing precondition is present at the wrist-wearable deviceincludes determining whether the position and/or orientation of thewrist-wearable device indicates that the user's wrist is in a raisedposition or a lowered position, such that the video-viewing preconditionis not present at the wrist-wearable device when the user's wrist isdetermined to be in the lowered position.

(A4) In some embodiments of any of A1-A3, the method further includeswhile the video call is ongoing and a video-capturing precondition ispresent at the wrist-wearable device, capturing additional video datavia a camera integrated with the wrist-wearable device and additionalaudio data via a microphone at the wrist-wearable device. The methodfurther includes sending the additional video data and the additionalaudio data to a device associated with the at least one other userparticipating in the video call. In accordance with a determination thatthe video-capturing precondition is no longer present at thewrist-wearable device, the method further includes ceasing to capturethe additional video data via the camera integrated with thewrist-wearable device. Use of the video-capturing precondition (inaddition to the video-viewing precondition discussed above) thus helpsto further example goals of properly managing the limited computing andprocessing resources at the wrist-wearable device, thereby helping toensure a sustained user interaction with the wrist-wearable deviceduring the ongoing video call. As described more below, video-viewingand video-capturing preconditions can be separate preconditions (e.g.,different satisfaction of different preconditions, which can be based onsensor data, leads to separate satisfaction of the video-viewing andvideo-capturing preconditions), can be the same preconditions (e.g.,satisfaction of the same preconditions, which can be based on sensordata, leads to satisfaction of both of the video-viewing andvideo-capturing preconditions), can be device-specific preconditions(e.g., different conditions, which can be separately evaluated, fordifferent types of devices), can be preconditions satisfied based onconditions at different devices evaluated together, and combinationsthereof.

(A4.3) In some embodiments of A4, the method further includes inconjunction with the determination that the video-capturing preconditionis no longer present at the wrist-wearable device, in accordance with adetermination that the wrist-wearable device is communicatively coupledwith smart glasses (e.g., an example of the head-worn wearable devicesdescribed herein) worn by the user, (i) capturing further video data viaa camera integrated with the smart glasses and (ii) sending the furthervideo data to the device associated with the at least one other user inconjunction with the video call. This is an example of the other callingmodes described here, with this example other calling mode being a modein which hardware components of the smart glasses are used during thevideo call instead of (or in addition to) hardware components of thewrist-wearable device. The other calling modes also include theaudio-calling mode described earlier.

(A4.6) In some embodiments of A4.3, the method further includes inaccordance with the determination that that wrist-wearable device iscommunicatively coupled with the smart glasses (i) capturing furtheraudio data via a microphone at the smart glasses and (ii) sending thefurther audio data to the device associated with the at least one otheruser in conjunction with the video call. In other words, during one ofthe other calling modes, in addition to use a camera of the smartglasses, the method can also make use of the microphone of the smartglasses as well.

(A4.9) In some embodiments of A4.3, the method further includes inconjunction with the determination that the video-capturing preconditionis no longer present at the wrist-wearable device, in accordance with adetermination that the wrist-wearable device is not communicativelycoupled with smart glasses worn by the user, sending only the additionalaudio data to the device associated with the at least one other user inconjunction with the video call. In other words, availability of theother calling modes can be based on whether the wrist-wearable device iscoupled with smart glasses or not; in the instance when thewrist-wearable device is not communicatively coupled with the smartglasses, then the available other calling modes can, in some examples,only include the audio-calling mode.

(A5) In some embodiments of any of A4-A4.9, determining whether thevideo-capturing precondition is present at the wrist-wearable deviceincludes determining whether the position and/or orientation of thewrist-wearable device indicates that the user's wrist is in the raisedposition or the lowered position, such that the video-capturingprecondition is not present at the wrist-wearable device when the user'swrist is determined to be in the lowered position, and thevideo-capturing precondition is present at the wrist-wearable devicewhen the user's wrist is determined to be in the raised position. Insome embodiments, only a single precondition is utilized (e.g., thevideo-viewing and video-capturing preconditions correspond to a sameprecondition, such as one based on the user's wrist position). In otherembodiments, there are a plurality of video-viewing and video-capturingpreconditions and at least one precondition in each of the pluralitiesoverlaps, but there is at least one precondition that does not overlapin the two pluralities. Additional descriptions of the video-viewing andvideo-capturing preconditions are provided in the detailed descriptionfollowing this summary section.

(A6) In some embodiments of any of A4-A5, the method further includeswhile the video call is ongoing and the video-capturing precondition ispresent at the wrist-wearable device, replacing the user's face in aportion of the additional video data with an avatar representing theuser's face.

(A7) In some embodiments of A6, replacing of the user's face in theportion of the additional video data is performed in accordance with adetermination that additional sensor data from the one or more sensorsindicates that the user's face should be replaced in the portion of theadditional video data.

(A8) In some embodiments of A8, the additional sensor data is obtainedfrom one or more of an ambient noise sensor, an ambient light sensor, alocation sensor, and a biometric sensor.

(A9) In some embodiments of any of A6-A8, the replacing of the user'sface in the portion of the additional video data is performed based onan instruction from the user.

(A9.5) In some embodiments of any of A6-A9, the replacing of the user'sface in the portion of the additional video data is performed based, inpart, on an angle of the camera in relation to the user's face. Theangle of the camera can be determined based on data from the one or moresensors of the wrist-wearable device (and can also be determined usingsensor data from a device communicatively coupled with thewrist-wearable device, such as sensor data from a pair of smart glasses,including data from a camera of the smart glasses that can be used tohelp determine the angle of the camera of the wrist-wearable device).

(A10) In some embodiments of any of A5-A9, when it is determined thatthe user's wrist is in the raised position, the video-viewingprecondition is determined to be present at the wrist-wearable deviceonly if the user's wrist is also positioned such that the display of thewrist-wearable device is viewable by the user (e.g., viewing anglebetween at least one of the user's eyes and the display of thewrist-wearable device is no more than 30 degrees). The method furtherincludes while the user's wrist is in the raised position and thedisplay of the wrist-wearable device is viewable by the user,determining that the video-capturing precondition is present at thewrist-wearable device and the video-viewing precondition is not presentat the wrist-wearable device. Based on the determining, (i) sending theadditional video data and the additional audio data to the device of theat least one other user and (ii) causing presentation of the audio dataat the speaker that is in communication with the wrist-wearable device.

(A11) In some embodiments of any of A1-A10, the one or more sensorsinclude a sensor for monitoring a temperature at the wrist-wearabledevice. The method further includes in accordance with a determinationthat the temperature at the wrist-wearable device reaches or exceeds apredefined temperature value, displaying on the display of thewrist-wearable device a user interface element that provides a warningto the user that the wrist-wearable device needs to cool down.

(A12) In some embodiments of A11, the determination that thevideo-viewing precondition is not present at the wrist-wearable deviceis made (i) after displaying the warning to the user and (ii) is basedin part on the temperature at the wrist-wearable device having reachedor exceeded the predefined temperature value for a threshold period oftime. Stated another way, the predefined temperature value can be usedas an additional video-viewing precondition (which can be referred to asa temperature-based video-viewing precondition, as compared to aposition-based video-viewing precondition that can be associated withwrist or arm positions) to assist with the seamless and automaticswitching between video and other calling modes at the wrist-wearabledevice (e.g., audio-calling mode or other modes that make use ofcomponents at a different device during the view call, such as makinguse of hardware at a head-worn wearable device instead of hardware atthe wrist-wearable device).

(A13) In some embodiments of A12, the determination that the temperatureat the wrist-wearable device has exceeded the predefined temperaturevalue for the threshold period of time is made while a position-basedvideo-viewing precondition remains present at the wrist-wearable device.In other words, the predefined temperature value (which can be used aspart of the temperature-based video-viewing precondition describedabove) can be evaluated separately from the position-based video-viewingprecondition and can override the position-based video-viewingprecondition to cause the device to switch away from a video-callingmode and to a different mode (e.g., audio-only mode).

(A14) In some embodiments of any of A12-A13, the method further includesin accordance with a determination that the temperature at thewrist-wearable device is below the predefined temperature value and thatthe position-based video-viewing precondition is present at thewrist-wearable device, resuming display of the video data at the displayof the wrist-wearable device.

(A15) In some embodiments of any of A1-A14 the method further includesin conjunction with causing presentation of the audio data and ceasingto cause presentation of the video data, operating the display in alow-power mode in which no video content is displayed at the display.

(A16) In some embodiments of any of A1-A15, the method further includesdetecting that another electronic device associated with the user islocated in proximity to the wrist-wearable device. The other electronicdevice having one or more of (i) a larger capacity battery than abattery of the wrist-wearable device and (ii) a connection to a powersource. The method further includes, in accordance with a determinationthat a display of the other electronic device is available, ceasing topresent the video data via the display of the wrist-wearable device andproviding to the other electronic device data to cause presentation ofthe video data on the display of the other electronic device.

(A17) In some embodiments of any of A1-A16, the other electronic deviceis a laptop, a tablet, a smartphone, smart glasses, or a smart display.

(A18) In some embodiments of any of A1-A17, the method further includesin accordance with a determination that the wrist-wearable device iscommunicatively coupled with smart glasses, the speaker that is incommunication with the wrist-wearable device that is used to present theaudio data is a speaker coupled with the smart glasses. Alternatively,in accordance with a determination that the wrist-wearable device is notcommunicatively coupled with smart glasses, the speaker that is incommunication with the wrist-wearable device that is used to present theaudio data is a speaker directly coupled with the wrist-wearable device.

(B1) In accordance with some embodiments, a wrist-wearable device forvideo calling is provided. The wrist-wearable device is configured toperform or cause performance of the method of any of A1-A18.

(C1) In accordance with some embodiments, a capsule housing the one ormore sensors and the display recited in A1 is provided. The capsule isconfigured to couple with a wearable structure (e.g., a band portion anda cradle portion that is detachably coupled with the capsule housing) toform a wrist-wearable device, and the capsule includes one or moreprocessors configured to perform or cause performance of the method ofany of A1-A18.

(D1) In accordance with some embodiments, a non-transitory,computer-readable storage medium is provided. The non-transitory,computer-readable storage medium includes instructions that whenexecuted by a wrist-wearable device, cause the wrist-wearable device toperform or cause performance of the method of any of A1-A18. Foroperations described above as being performed at smart glasses (or, moregenerally, a head-worn wearable device), a non-transitorycomputer-readable storage medium can also be provided as includinginstructions that, when executed by the head-worn wearable device, causethe head-worn wearable device to perform those operations.

(E1) In accordance with some embodiments, another aspect includes meansfor performing the method any of A1-A18. The means can include softwarealgorithms (e.g., algorithms implementing the flowcharts that aredescribed below) performed on general-purpose hardware and/orapplication-specific integrated circuits configured to perform thealgorithms described herein (e.g., algorithms implementing theflowcharts that are described below).

Next, in F1-G3, an example head-worn wearable device (and relatedsystems, methods, and mediums) is (are) described, which head-wornwearable device can be configured to perform certain aspects of thevideo-calling examples described earlier that allow for coordinatedbehavior between the head-worn wearable device and the wrist-wearabledevice during a video call (e.g., to allow for seamlessly switchingbetween using components of these two different devices during a videocall).

(F1) In accordance with some embodiments, a head-worn wearable devicewith a camera for use during a video call initiated at a wrist-wearabledevice is provided (in certain embodiments or circumstances the videocall can also be initiated at the head-worn wearable device). Thehead-worn wearable device can be smart glasses, an augmented reality(AR) head-mounted display, a virtual reality (VR) head-mounted display,or other head-mounted displays. The head-worn wearable device includes aframe, a camera coupled with the frame, and one or more processors. Theone or more processors are configured to receive an instruction from awrist-wearable device that causes the one or more processors to activatethe camera for use in capturing video data in conjunction with a videocall initiated at the wrist-wearable device. The instruction is sent bythe wrist-wearable device (in some embodiments, the wrist-wearabledevice sends the instruction to an intermediary device, such as asmartphone, which can be configured to serve as an intermediary betweenthe wrist-wearable device and the head-worn wearable device to assistwith the coordinated behaviors described herein) in accordance with adetermination that a video-capturing precondition is not present at thewrist-wearable device. The one or more processors, in response toreceiving the instruction, are further configured to activate the cameraand provide video data captured by the camera to the wrist-wearabledevice until an additional instruction is received from thewrist-wearable device that causes the one or more processors to ceaseproviding the video data captured by the camera to the wrist-wearabledevice in conjunction with the video call. The additional instruction issent by the wrist-wearable device in accordance with a determinationthat the video-capturing precondition is present at the wrist-wearabledevice. The one or more processors, upon receiving the additionalinstruction, also cease to provide the video data captured by the camerato the wrist-wearable device. As mentioned earlier, other devices, suchas phones, tablets, etc., can serve as a communication intermediarybetween the wrist-wearable device and the head-worn device and cantherefore send the instructions that are then received by the head-wornwearable device.

(F2) In some embodiments of F1, the head-worn wearable device furtherincludes a microphone, and the instruction also causes the one or moreprocessors to activate the microphone for use in capturing audio data.

(F3) In some embodiments of F2, the additional instruction causes theone or more processors to also cease providing the audio data.

(F4) In some embodiments of any of F1-F3, the head-worn wearable devicefurther includes a speaker, and the instruction also causes the one ormore processors to activate the speaker for use in presenting audio datareceived at the wrist-wearable device.

(F5) In some embodiments of F4, the additional instruction causes theone or more processors to also cease presenting audio data received atthe wrist-wearable device.

(F6) In some embodiments of any of F1-F5, the head-worn wearable devicefurther includes a display, and the instruction also causes the one ormore processors to activate the display for use in presenting video datareceived at the wrist-wearable device.

(F7) In some embodiments of F6, the additional instruction causes theone or more processors to also cease presenting video data received atthe wrist-wearable device.

(G1) In another aspect, a system is provided that includes a head-wornwearable device of any of F1-F6 and a wrist-wearable device of B1 or E1.

(G2) In a further aspect, a method is provided that includes performingthe operations performed by the head-worn wearable device of any ofF1-F7.

(G3) In yet another aspect, a non-transitory, computer-readable storagemedium is provided, which storage medium includes instructions that,when executed by a head-worn wearable device, cause the head-wornwearable device to perform or cause performance of the operations in anyof F1-F7.

As explained in more detail in the detailed description that followsthis summary, the embodiments herein are not limited to video callingalone. The techniques described herein also help to enable coordinatedrecording of video data between a head-worn wearable device (e.g., apart of smart glasses) and a wrist-wearable device (e.g., a smartwatch). The summarized examples that follow illustrate this as theseexamples include coordination between the head-worn wearable device andthe wrist-wearable device to determine when video capturing at ahead-worn wearable device should be ceased (which can occur without anexpress user instruction to cause the ceasing), as is summarized forH1-J3; following that a summarized example of coordination between thehead-worn wearable device and the wrist-wearable device to allow for thecreation of coordinated video data (e.g., a video that includes videodata captured at the head-worn wearable device and video data capturedat the wrist-wearable device), as is summarized for K1-K16.

(H1) In accordance with some embodiments, a method of determining whento cease capturing video via a head-worn wearable device is provided.The method includes capturing, via a head-worn wearable device thatincludes a camera, video data. The method includes, while capturing thevideo data, monitoring sensor data indicating one or both of (i) aposition (and/or orientation) of the head-worn wearable device and (ii)a position (and/or orientation) of a wrist-wearable device that iscommunicatively coupled with the head-worn device to determine when tocease capturing the video data. The method further includes, inaccordance with a determination that at least some of the sensor dataindicates that one or both of (i) a video-capturing precondition is notpresent at the head-worn wearable device and (ii) a video-viewingprecondition is present at the wrist-wearable device, ceasing to capturethe video data and causing the video data to be displayed on a displayof the wrist-wearable device.

(H2) In some embodiments of H1, the determination is based only on atleast some of the sensor data indicating that the video-capturingprecondition is not present at the head-worn wearable device.

(H3) In some embodiments of H2, the video-capturing precondition is notpresent at the head-worn wearable device when at least some of thesensor data indicates that the head-worn wearable device is positionedsuch that a front portion of the head-worn wearable device is facingtowards the ground.

(H4) In some embodiments of H3, the front portion of the head-wornwearable device is a portion of the head-worn wearable device that isworn over a user's eyes.

(H5) In some embodiments of any of H1-H4, the determination is basedonly on at least some of the sensor data indicating that thevideo-viewing precondition is present wrist-wearable device.

(H6) In some embodiments of H5, the video-viewing precondition ispresent at the wrist-wearable device when the wrist-wearable device isin a raised position.

(H7) In some embodiments of any of H1-H6, the determination is based onat least some of the sensor data indicating both (i) the video-capturingprecondition is not present at the head-worn wearable device and (ii)the video-viewing precondition is present at the wrist-wearable device.

(I1) In another aspect, a system including a head-worn wearable deviceand a wrist-wearable device is provided. The system is configured toperform or cause the performance of the method of any of H1-H7 using thehead-worn wearable device and the wrist-wearable device.

(J1) In a further aspect, a non-transitory, computer-readable storagemedium is provided. The non-transitory, computer-readable storage mediumincludes instructions that, when executed by a head-worn wearabledevice, cause the head-worn wearable device to perform or causeperformance of the method of any of H1-H7.

(J2) In yet an additional aspect, a wrist-wearable device is provided,the wrist-wearable device used in conjunction with performance of themethod of any of H1-H7.

(J3) In one more aspect, means are provided for performing or causingperformance of the method of any of H1-H7. The means can includesoftware algorithms (e.g., algorithms implementing the flowcharts thatare described below) performed on general-purpose hardware and/orapplication-specific integrated circuits configured to perform thealgorithms described herein (e.g., algorithms implementing theflowcharts that are described below).

(K1) Another example described herein is a method of coordinated videocapturing using a wrist-wearable device and a head-worn wearable device.The method includes capturing, via a head-worn wearable device thatincludes a camera, first video data. The method also includes, whilecapturing the first video data, monitoring sensor data indicating one orboth of (i) a position of the head-worn wearable device and (ii) aposition of a wrist-wearable device that is communicatively coupled withthe head-worn device to determine when to cease capturing the firstvideo data via the head-worn wearable device. The method furtherincludes, in accordance with a determination that at least some of thesensor data indicates that one or both of (i) a video-capturingprecondition is not present at the head-worn wearable device and (ii) avideo-capturing precondition is present at the wrist-wearable device,ceasing to capture the first video data and beginning to capture secondvideo data via a camera of the wrist-wearable device.

(K2) In accordance with some embodiments of K1, the method additionallyincludes, in response to receiving a request from a user to ceasingcapturing the second video data, causing the first video data and thesecond video data to be combined into coordinated video data.

(K3) In accordance with some embodiments of K2, the method includescausing the coordinated video data to be displayed on a display of thewrist-wearable device.

(K4) In accordance with some embodiments of any of K1-K3, thedetermination is based only on at least some of the sensor dataindicating that the video-capturing precondition is not present at thehead-worn wearable device.

(K5) In accordance with some embodiments, of K4 the video-capturingprecondition is not present at the head-worn wearable device when atleast some of the sensor data indicates that the head-worn wearabledevice is positioned such that a front portion of the head-worn wearabledevice is facing towards the ground.

(K6) In accordance with some embodiments of K5, the front portion of thehead-worn wearable device is a portion of the head-worn wearable devicethat is worn over a user's eyes.

(K7) In accordance with some embodiments of K1, the determination isbased only on at least some of the sensor data indicating that thevideo-capturing precondition is present at the wrist-wearable device.

(K8) In accordance with some embodiments of K7, the video-capturingprecondition is present at the wrist-wearable device when thewrist-wearable device is in a raised position.

(K9) In accordance with some embodiments of K1, the determination isbased on at least some of the sensor data indicating both (i) thevideo-capturing precondition is not present at the head-worn wearabledevice and (ii) the video-capturing precondition is present at thewrist-wearable device.

(K10) In accordance with some embodiments of any of K1 or K4-K9, themethod includes, while the second video data is being captured,monitoring sensor data indicating one or both of (i) a position of thehead-worn wearable device and (ii) a position of a wrist-wearable devicethat is communicatively coupled with the head-worn device to determinewhen to cease capturing the second video data at the wrist-wearabledevice. The method also includes, in accordance with an additionaldetermination that at least some of the sensor data indicates that oneor both of (i) the video-capturing precondition is present at thehead-worn wearable device and (ii) the video-capturing precondition isnot present at the wrist-wearable device, ceasing to capture the secondvideo data and beginning to capture third video data via the camera ofthe head-worn device.

(K11) In accordance with some embodiments of K10, the method alsoincludes, in response to receiving a request from a user to ceasecapturing the third video data, causing the first video data, the secondvideo data, and the third video data to be combined into coordinatedvideo data.

(K12) In accordance with some embodiments of K11, the method furtherincludes causing the coordinated video data to be displayed on a displayof the wrist-wearable device.

(K13) In another aspect, as system is provided that includes a head-wornwearable device and a wrist-wearable device, the system configured toperform the method of any of claims K1-K12 using the head-worn wearabledevice and the wrist-wearable device.

(K14) In one more aspect, a non-transitory, computer-readable storagemedium is provided, the medium including instructions that, whenexecuted by a head-worn wearable device, cause the head-worn wearabledevice to perform or cause performance of the method of any of claimsK1-K12.

(K15) In one other aspect, a wrist-wearable device used in conjunctionwith performance of the method of any of K1-K12 is provided.

(K16) In one more other aspect, means for performing or causingperformance of the method of any of K1-K12 are provided. The means caninclude software algorithms (e.g., algorithms implementing theflowcharts that are described below) performed on general-purposehardware and/or application-specific integrated circuits configured toperform the algorithms described herein (e.g., algorithms implementingthe flowcharts that are described below).

As explained in more detail in the detailed description that followsthis summary, the embodiments herein are not limited to video callingalone. The techniques described herein also help to enable coordinatedvideo streaming and messaging using a wrist-wearable device (e.g., asmart watch) and a head-worn wearable device (e.g., a part of smartglasses). The summarized examples that follow illustrate this as theseexamples include coordination between video data captured by thehead-worn wearable device, transmitted captured video data (e.g., by thehead-worn wearable device and/or the wrist-wearable device), andreceived messages (e.g., by the head-worn wearable device and/or thewrist-wearable device) to synchronize the received messages with thetransmitted video data, as is summarized for L1-O1.

(L1) An example described herein is a method of coordinated videostreaming and messaging using a wrist-wearable device and a head-wornwearable device. The method includes receiving an instruction to use acamera of a head-worn wearable device to capture video data for a videostream. The method includes, after receiving the instruction to use thecamera of the head-worn wearable device to capture the video data forthe video stream, receiving, at a wrist-wearable device that is incommunication with the head-worn wearable device (in some embodiments,the receiving can instead or additionally occur by way of a head-wornwearable device that is in communication with the wrist-wearable device,which head-worn wearable device can include its own communicationantennas for, e.g., WiFi, cellular, and other types of communicationchannels), one or more electronic messages from a viewer of the videostream; monitoring sensor data indicating one or both of (i) a positionof the head-worn wearable device and (ii) a position of thewrist-wearable device to determine when to display, via a display of thewrist-wearable device, the one or more electronic messages. The methodfurther includes, in accordance with a determination that the sensordata indicates that a message-viewing precondition is present,displaying, on the display of the wrist-wearable device, the one or moreelectronic messages from the viewer of the video stream.

(L2.1) In accordance with some embodiments of L1, the instruction to usethe camera of the head-worn wearable device to capture video data forthe video stream is received at the wrist-wearable device.

(L2.3) In accordance with some embodiments of any of L1-L2.1, the methodfurther includes in conjunction with displaying, on the display of thewrist-wearable device, the one or more electronic messages, displaying avisual indicator reflecting that the wrist-wearable device is incommunication with the head-worn wearable device.

(L2.5) In accordance with some embodiments of L1, the head-worn wearabledevice further includes a microphone, and while the camera of thehead-worn wearable device is capturing the video data for the videostream, the microphone is capturing audio data for the video stream.

(L3) In accordance with some embodiments of any of L1-L2.5, the one ormore electronic messages are received responsive to the video datacaptured via the camera of the head-worn wearable device and the one ormore electronic messages are displayed in the order received.

(L4) In accordance with some embodiments of any of L1-L3, thewrist-wearable device and the head-worn wearable device includerespective speakers, the one or more electronic messages includetext-to-speech (TTS) messages, and the method further includes causing aspeaker of the wrist-wearable device or a speaker of the head-wornwearable device to present audio data corresponding to the TTS messages.

(L5) In accordance with some embodiments of L4, the speaker of thewrist-wearable device or the speaker of the head-worn wearable device isautomatically selected for use in presenting the audio datacorresponding to the TTS messages based on the sensor data indicatingone or both of (i) the position of the head-worn wearable device and(ii) the position of the wrist-wearable device that is communicativelycoupled with the head-worn device.

(L6) In accordance with some embodiments of any of L1-L5, adetermination that the message-viewing precondition is present is basedon one or both of (i) at least some of the sensor data indicating thatthe head-worn wearable device is positioned such that a front portion ofthe head-worn wearable device is facing towards the wrist-wearabledevice and (ii) at least some of the sensor data indicating that thewrist-wearable device is positioned such that the display of thewrist-wearable device is facing towards the front portion of thehead-worn wearable device.

(L7) In accordance with some embodiments of any of L1-L6, the methodfurther includes in accordance with a determination that themessage-viewing precondition is no longer present, ceasing to display,via the display of the wrist-wearable device, the one or more messages.

(L8) In accordance with some embodiments of any of L1-L7, the camera ofthe head-worn wearable device captures video data that is within a fieldof view of the camera of the head-worn wearable device.

(L9) In accordance with some embodiments of any of L1-L8, the methodfurther includes in response to receiving the one or more electronicmessages, causing one or both of the head-worn wearable device and thewrist-wearable device to provide a notification to a user of thehead-worn wearable device and the wrist-wearable device, thenotification indicating receipt of the one or more electronic messagesto the user.

(L10) In accordance with some embodiments of L9, the notificationincludes at least one of a vibration, audible indicator, and visualindicator.

(L11) In accordance with some embodiments of any of L1-L10, displayingthe one or more electronic messages includes displaying a plurality ofelectronic messages for a plurality of different viewers of the videostream, and the plurality of electronic messages are displayed in achronological fashion.

(L12) In accordance with some embodiments of any of L1-L11, the methodfurther includes receiving, via the wrist-worn wearable device, anotheruser input terminating the video stream, and responsive to the otheruser input terminating the video stream, causing the camera of thehead-worn wearable device to cease to capture the video data.

(M1) An example described herein is a system comprising a head-wornwearable device and a wrist-wearable device, the system configured toperform the method of any of L1-L12 using the head-worn wearable deviceand the wrist-wearable device.

(N1) An example described herein is a non-transitory, computer-readablestorage medium including instructions that, when executed by awrist-worn wearable device, cause the wrist-worn wearable device toperform or cause performance of the method of any of L1-L12.

(O1) An example described herein is a wrist-wearable device used inconjunction with performance of the method of any of L1-L12.

(P1) Means for performing or causing performance of the method of any ofL1-L12 are provided.

Note that the various embodiments described above can be combined withany other embodiments described herein. The features and advantagesdescribed in the specification are not all inclusive and, in particular,many additional features and advantages will be apparent to one ofordinary skill in the art in view of the drawings, specification, andclaims. Moreover, it should be noted that the language used in thespecification has been principally selected for readability andinstructional purposes and may not necessarily have been selected todelineate or circumscribe the subject matter described herein.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the present disclosure can be understood in greater detail, amore particular description may be had by reference to the features ofvarious embodiments, some of which are illustrated in the appendeddrawings. The appended drawings illustrate pertinent example features ofthe present disclosure and are therefore not to be considered limiting,for the description may admit to other effective features as the personof skill in this art will appreciate upon reading this disclosure.

FIGS. 1A-1F illustrate a wrist-wearable device 102 of a user 130transmitting and receiving audio data and/or video data in conjunctionwith an ongoing video call, in accordance with some embodiments. FIGS.1E-1F also illustrate an example of the wrist-wearable device operatingin a coordinated fashion with a head-worn wearable device (in thisexample, a pair of smart glasses), in accordance with some embodiments.

FIGS. 1G-1J, illustrate a portable device of a user transmitting andreceiving audio data and/or video data in conjunction with an ongoingvideo call, in accordance with some embodiments. Further, FIGS. 1K-1Lillustrate an example of the portable device operating in a coordinatedfashion with a head-worn wearable device (in this example, a pair ofsmart glasses), in accordance with some embodiments.

FIG. 2A illustrates a process for performing automatic switches betweenvideo and audio-only modes based on whether one or more video-viewingpreconditions are satisfied at a wrist-wearable device, in accordancewith some embodiments.

FIG. 2B illustrates a process for performing automatic switches betweenturning a video-capture mode on and off based on whether one or morevideo-capturing preconditions are satisfied at a wrist-wearable device,in accordance with some embodiments.

FIGS. 3A-3F illustrate example user interfaces used in conjunction withpresenting video or audio-only data based on whether one or morevideo-viewing preconditions are satisfied at a wrist-wearable device andcapturing and sending video and audio data based on whether one or morevideo-capturing preconditions are satisfied at the wrist-wearabledevice, in accordance with some embodiments.

FIGS. 4A-4C illustrate the wrist-wearable device 102 detecting anotherelectronic device associated with the user and using the otherelectronic device to present, capture, and/or send audio and video dataduring an ongoing video call, in accordance with some embodiments.

FIGS. 5A-5C illustrate the wrist-wearable device 102 replacing theuser's face with an avatar representing the user's face while the videocall is ongoing and the video-capturing precondition is present at thewrist-wearable device 102, in accordance with some embodiments.

FIG. 6 illustrates a flow diagram of a method for presenting audioand/or video data at a wrist-wearable device during a video call,according to some embodiments.

FIG. 7 illustrates a flow diagram of a method for capturing and sendingaudio and/or video data by a wrist-wearable device during a video call,according to some embodiments.

FIGS. 8A-8E illustrate a detailed flow diagram of a method ofpresenting, capturing, and/or sending audio and/or video data by awrist-wearable device during a video call, according to someembodiments.

FIGS. 9A-9B illustrate an example wrist-wearable device used inconjunction with the techniques described herein, in accordance withsome embodiments. Further, FIGS. 9C-9D illustrate an example portabledevice used in conjunction with the techniques described herein, inaccordance with some embodiments.

FIG. 10 is a block diagram of a wrist-wearable device system, accordingto at least one embodiment of the present disclosure.

FIG. 11 illustrates a detailed flow diagram of a method of a coordinatedvideo capturing technique for a head-worn wearable device and awrist-wearable device (e.g., determining when to cease capturing videovia a head-worn wearable device based on sensor data at the head-wornwearable device and/or at a wrist-wearable device coupled with thehead-worn wearable device), according to some embodiments.

FIG. 12 illustrates a detailed flow diagram of a method of a coordinatedvideo capturing technique for a head-worn wearable device and awrist-wearable device (e.g., creating coordinated video using video datacaptured by a camera of the wrist-wearable device and by a camera of thewrist-wearable device), according to some embodiments.

FIGS. 13A-13D illustrate coordinated video streaming and messaging usinga wrist-wearable device and a head-worn wearable device, in accordancewith some embodiments.

FIG. 14 illustrates a detailed flow diagram of a method of coordinatedvideo streaming and messaging using a wrist-wearable device and ahead-worn wearable device, according to some embodiments.

In accordance with common practice, the various features illustrated inthe drawings may not be drawn to scale. Accordingly, the dimensions ofthe various features may be arbitrarily expanded or reduced for clarity.In addition, some of the drawings may not depict all of the componentsof a given system, method, or device. Finally, like reference numeralsmay be used to denote like features throughout the specification andfigures.

DETAILED DESCRIPTION

Numerous details are described herein in order to provide a thoroughunderstanding of the example embodiments illustrated in the accompanyingdrawings. However, some embodiments may be practiced without many of thespecific details, and the scope of the claims is only limited by thosefeatures and aspects specifically recited in the claims. Furthermore,well-known processes, components, and materials have not been describedin exhaustive detail so as to avoid obscuring pertinent aspects of theembodiments described herein.

FIGS. 1A-1F illustrate a user 130 transmitting and receiving audio dataand/or video data using a wrist-wearable device 102, in accordance withsome embodiments. In particular, the wrist-wearable device monitorssensor data to sense when a user 130 changes a position of thewrist-wearable device 102, which positional changes cause thewrist-wearable device to automatically switch (e.g., without an expressuser request to do the switching) between video and other modes (e.g.,an audio-only mode and other modes that make use of components ofanother device, such as a head-worn wearable device) at thewrist-wearable device 102. The wrist-wearable device 102 is configuredto receive and present video and/or audio data via a display 115 and aspeaker. The wrist-wearable device 102 is further configured to capturevideo data and/or audio data, via an image sensor 135 (e.g., a camera)and a microphone, and send the captured data to another device (e.g.,computing device 350; FIGS. 3A-3F) distinct from the wrist-wearabledevice 102. In some embodiments, the wrist-wearable device 102 includesone or more sensors (e.g., sensors a heart rate sensor 1058, EMG sensor1046, SpO2 sensor 1054, altimeter 1048, thermal sensor or thermalcouple, ambient light sensor, ambient noise sensor).

In some embodiments, audio and/or video data is presented at thewrist-wearable device 102 in accordance with a determination, by thewrist-wearable device, that one or more video-viewing preconditions arepresent. More specifically, when the one or more video-viewingpreconditions are present, the wrist-wearable device 102 presents audioand video data to the user 130. Alternatively, when the one or morevideo-viewing preconditions are not present, the wrist-wearable device102 presents (or, at least, causes presentation of) audio data but notvideo data to the user 130. The determination whether the one or morevideo-viewing preconditions are present is conducted automatically andwithout instructions from the user 130 (so the user does not requestthat the wrist-wearable device switch between video and audio-onlymodes, instead the device monitors whether the video-viewingpreconditions are satisfied based on data from sensors of thewrist-wearable device to enable automatic determinations that do notrequire input from the user). In some embodiments, one or more machinelearning algorithms and/or models are used by the wrist-wearable device102 to determine whether the one or more video-viewing preconditions arepresent (e.g., machine-learning algorithms that have been trained basedon sensor data from wrist-wearable devices to learn when switchingbetween video and other calling modes is appropriate). In someembodiments, the wrist-wearable device 102 updates the one or moremachine learning algorithms and/or models over time based on collectedsensor data for a user to further refine when the switching betweenvideo and other calling modes should occur.

For example, as shown in FIG. 1A, the user 130 can receive, at thewrist-wearable device 102, a video call. In some embodiments, thewrist-wearable device 102 presents on its display 115 a user interfaceelement 120 that provides a notification to the user 130 of the incomingvideo call (e.g., text within the user interface that states “Video CallIncoming”). The user 130 then accepts the video call. While the videocall is ongoing, the wrist-wearable device monitors sensor data to makedeterminations as to whether one or more video-viewing preconditions arepresent at the wrist-wearable device, which video-viewing preconditionsare used to cause automatic switching between video and other modes(e.g., including an audio-only mode) during the ongoing video call. Whenthe wrist-wearable device 102 determines that the video-viewingprecondition is present at the wrist-wearable device 102, thewrist-wearable device 102 causes presentation of video data on itsdisplay 115 as shown in FIG. 1B (e.g., the display 115 of thewrist-wearable device is used to present video data received from acounterpart video call participant described with reference to FIGS.3A-3F, and also depicted in FIGS. 1B and 1C on the display of thewrist-wearable device). In some embodiments, the wrist-wearable device102 presents on its display 115 another user interface element thatnotifies the user 130 that video mode is on. The video calling and othercalling modes are discussed below in more detail in reference to FIGS.2A-3F.

The one or more video-viewing preconditions include a precondition thatis satisfied when sensor data from the wrist-wearable device indicatesthat the user 130 has raised his or her wrist (or hand, elbow, arm, orportion thereof) to a predetermined raised position 104A (e.g., abovethe user's waist or midsection 105). For example, in FIG. 1B, thevideo-viewing precondition is present at the wrist-wearable device 102when it is determined based on sensor data from the wrist-wearabledevice that the user 130 has raised his or her wrist (or hand, elbow,arm or portion thereof) above his or her waist or midsection 105, assuch the wrist-wearable device would present both audio and video dataduring the ongoing video call (as is shown in FIGS. 1B and 1C). In someembodiments, if a determination is made that the wrist-wearable deviceis communicatively coupled with a head-worn wearable device thatincludes a speaker, the wrist-wearable device can instead user thespeaker of the head-worn wearable device for presentation of the audiodata.

When the user's wrist position (or hand, elbow, arm or portion thereof)is in a lowered position 104, the wrist-wearable device 102 can stillreceive video data along with audio data, but only presents the audiodata via one or more speakers (and does not present the video data,which allows the wrist-wearable device to preserve its limited power andcomputing resources without impacting a sustained user interaction sincethe user 130 is no longer able to view the display 115 of thewrist-wearable device 102 when it is in its lowered position; examplesof the lowered position are shown in FIGS. 1A, 1D, and 1E). In someembodiments, the lowered position can be in a position just below thewaist or midsection of a user (e.g., waist or midsection 105 of user130). In some embodiments, the wrist-wearable device need only keeptrack of a raised position of the wrist-wearable device, such that ifthe sensor data indicates that the device is in any position other thanthe raised position, then the wrist-wearable devices remains in thevideo mode (causes presentation of video and audio data for the ongoingvideo call).

In some embodiments, indicators 127 and/or 125 can presented on thedisplay 115 of the wrist-wearable device to provide the user with avisual indication as to where audio is being presented (e.g., device onwhich audio data is being presented for an ongoing video call candisplay the speaker indicator 125) and/or where audio data is beingreceived (e.g., device on which audio data is being received/capturedfor an ongoing video call, such as via a microphone, can display themicrophone indicator 127).

In some embodiments, the one or more video-viewing preconditions includea precondition that is satisfied when the wrist-wearable device detectsa tilt of the wrist-wearable device (e.g., an angle in which the deviceis tilted relative to a flat horizontal plane that can be parallel to aground surface below the user's feet) based on some of the sensor data.For example, the sensor data can include data from a gyroscope and/or anaccelerometer and the wrist-wearable device can determine, based on thesensor data, that the user has their wrist tilted up (e.g., a currenttilt of the device relative to the flat horizontal plane discussed aboveis within a first tilt position range, which can, in one example, bebetween 2-45 degrees) or their wrist tilted down (e.g., a current tiltof the device relative to the flat horizontal plane discussed above iswithin a second tilt position range, which can in one example be between46-95 degrees). In some embodiments, when the current tilt of the deviceis determined to be within the first tilt position range, thussatisfying a video-viewing precondition related to tilt of the device,the wrist-wearable device is caused to present both audio and/or videodata (or an avatar representation) during the ongoing video call (ifother preconditions, as appropriate depending on the circumstances,described herein are also satisfied). In some embodiments, when thecurrent tilt of the device is determined to be within the second tiltposition range, thus failing to satisfy the video-viewing preconditionrelated to tilt of the device, the wrist-wearable device is caused tostop presenting video data (e.g., end an ongoing video call) or presentonly audio data (or an avatar) during the ongoing video call (if otherconditions described herein are satisfied). In some embodiments, thedevice can make periodic determinations as to the current tilt of thedevice and it only switches to change the presentation of video and/oraudio based on changes in the current tilt (e.g., a change in which thecurrent tilt moves from with the first tilt position range to the secondposition range, or vice versa).

In some embodiments, the video-viewing precondition related to tilt isassessed to determine whether the display of the wrist-wearable device102 is viewable by the user (e.g., viewable because the display 115 isat a viewing/tilt angle that allows for viewing of the display 115 bythe user, such as a viewing angle of no less than 30 degrees between atleast one of the user's eyes and the display 115). In other words, insome embodiments, in addition to using the sensor data to assess whetherthe wrist-wearable device is in the raised position, sensor data at thewrist-wearable device is also used to assess a rotational position(e.g., tilt) of the user's wrist to determine whether the display isviewable by the user or not. As such, some embodiments can assess bothwhether the wrist-wearable device is in the raised position and whetherthe display is viewable (e.g., in an appropriate tilt position) by theuser, while other embodiments can assess just whether the device is inthe raised position in conjunction with a determination as to whetherthe one or more video-viewing preconditions are present at thewrist-wearable device. As another option used with some embodiments, thedevice 102 can use sensor data to determine whether a user is looking atthe display (e.g., display 115) or not; and, if it is determined thatthe user is looking at the display, then the video-viewing preconditionis determined to be satisfied (this can be used in conjunction with theother video-viewing preconditions or can be used as a standalonevideo-viewing precondition).

As mentioned above, data from the sensors on the wrist-wearable device102 is used, by the wrist-wearable device 102 (or by a device that cananalyze sensor data from the wrist-wearable device, such as anintermediary device like a smartphone, to make this determination, whichcan also make determinations associated with sensor data from head-wornwearable devices), to make a determination as to whether a video-viewingprecondition is present in a way that is automatic as not requiringinput from a user at the device 102 to conduct the determination. Forexample, the wrist-wearable device 102 can determine, based on thesensor data, that it is not in a raised position (e.g., is positionedbelow the user's waist or midsection 105) and determine that avideo-viewing precondition is not present and, as such, present onlyaudio data. Alternatively, the sensor data can indicate that the user'swrist is at or near the eye level of the user (e.g., above a user'swaist or midsection 105 such that the wrist-wearable device 102 can beviewed by the user 130 with slight or no adjustment to their headposition), and thus in the raised position (therefore, the video-viewingprecondition is present and both audio and video data are caused to bepresented). In some embodiments, the sensor data can indicate that thedisplay 115 is facing away from the user's line of sight (e.g., to oneside or the other, or parallel with the floor, etc.) and thewrist-wearable device 102 can determine that a video-viewingprecondition is not present and present only audio data (i.e., the videoremains off)—this determination could be made based on wrist orientationor based on whether the user is determined to be looking at the displayor a combination of both techniques. Alternatively, when the sensor dataindicates that that the display is facing the user, the wrist-wearabledevice 102 can determine that a video-viewing precondition is presentand then cause presentation of both video and audio data.

In some embodiments, the one or more sensors of the wrist-wearabledevice 102 include an inertial measurement unit (IMU) 1042 (FIG. 10 )and the sensed data from the one or more sensors includes sensed datafrom the IMU that allows the wrist-wearable device 102 to determine(e.g., using central processing unit 1026 and/or a microcontroller unit(MCU) 1052 (FIG. 10 ) to process the sensor data) a position andorientation of the wrist-wearable device 102 while it is worn on a wristof the user 130. The sensor data discussed above can thus be sensor datafrom the IMU 1042 but is not limited only to sensor data from the IMU.For instance, in embodiments in which sensors are available to assesswhether a user is looking at the display of the device 102, then sensordata from a heart rate sensor 1058, EMG sensor 1046, SpO2 sensor 1054,altimeter 1048, thermal sensor or thermal couple, ambient light sensor,ambient noise sensor can be utilized as well. For example, thewrist-wearable device 102 can use a thermal sensor or thermal couple (orinternal reading of the one or more processors) to determine whether avideo-viewing precondition is present (e.g., temperature is below apredetermined temperature threshold). Thus, various different types ofvideo-viewing preconditions can be used, including position-basedvideo-viewing preconditions and temperature-based video-viewingpreconditions, among others. In another example, the wrist-wearabledevice 102 can use internal clocks to determine whether a video-viewingprecondition is present (e.g., time usage is below a predetermined usagetime interval). Additional examples of the video-viewing preconditionsand the video-capturing preconditions are provided below. Information onthe one or more sensors is provided below in reference to FIG. 10 . Asone of skill in the art will appreciate upon reading this disclosure,when sensor data of a head-worn wearable device is used in conjunctionwith the techniques described here, examples of those sensors for thehead-worn wearable device can be similar to the examples provided inFIG. 10 for the wrist-wearable device, such that the head-worn wearabledevice can include altimeter(s), inertial measurement unit(s),capacitive sensor(s), among others.

In some embodiments, the one or more video-viewing preconditions includepredetermined temperature thresholds (e.g., medium temperature level,high temperature, shut-off or safety temperature, etc.), a predeterminedusage time interval (e.g., duration of video call is 30 sec, 1 min, 2min, 5 min., etc.), a battery life of the wrist-wearable device 102being above a minimum level, a predetermined power level (e.g., thewrist-wearable device 102 is not in a low power mode, the wrist-wearabledevice 102 is in a standard power mode or high power mode) or powerrequirement (e.g., power drain on the battery of the wrist-wearabledevice 102 is below a threshold, or the wrist-wearable device 102 isplugged into a power source). In some embodiments, the video-viewingpreconditions are based on user biometric data (e.g., heart rate,detected sweat, etc.), ambient lighting (e.g., bright sunny days, cloudydays, dark room compared to a well-lit room, etc.), user's location,user's movement, etc. For example, the wrist-wearable device 102 candetermine, based on data obtained from the sensors, that the lighting istoo bright such that video would not be visible regardless of the screenbrightness and then make a consequent determination that a video-viewingprecondition is not present. The one or more video-viewing preconditionscan also include preconditions related to whether the display of thedevice 102 is viewable by a user (which can be determined based onrotational/tilt position of the user's wrist and/or based on whether theuser is determined to be looking at the display of the device 102). Forexample, in some embodiments, a video-viewing precondition includes thatthe display 115 is at a particular viewing angle that allows the user tosee substantially all of the display 115 (e.g., the display 115 ispositioned at an angle relative the user's eyes, such that when the useris looking towards the display 115, their eyes can view substantiallyall of the display 115 at a viewing angle no greater than 20 degrees, 30degrees, or 45 degrees). In other words, a video-viewing preconditioncan be determined to be satisfied based on a determination that sensordata indicates that the display 115 is viewable by the user 130.

As described in more detail below, one or more video-capturingpreconditions can be utilized in addition to the video-viewingpreconditions discussed above. These video-capturing preconditions caninclude a minimum battery requirement (e.g., the device is plugged intoa battery source or has a minimum battery life), maximum temperaturethreshold (e.g., after the temperature threshold is met, the device willbe unable to operate video), minimum power requirement. In someembodiments, the video-capturing preconditions also include apredetermined position/orientation, a predetermined temperaturethreshold, a predetermined usage time interval, the wrist-wearabledevice 102 satisfies a predetermined power level. In some embodiments,the video-capturing preconditions are based on user biometric data(e.g., hear rate, detected sweat, etc.), ambient lighting (e.g., darkroom compared to a well-lit room), user's location, user's movement,etc. In some embodiments, the one or more video capturing conditions canbe the same or similar to the one or more video viewing preconditions,but in other embodiments or circumstances, the video-capturingpreconditions can be different from, and assessed separately from, thevideo-viewing preconditions.

As shown in FIG. 1C, in some embodiments, the wrist-wearable device 102is configured to capture audio and/or video data and to send (by way ofa network) the data to a remote user (e.g., to a computing device 350(FIG. 3A) associated with another user distinct from user 130). In someembodiments, the wrist-wearable device 102 captures and sends audio andvideo data to a computing device 350 (by way of a network) associatedwith another user distinct from user 130 based on a determination thatone or more video-capturing preconditions are present. In someembodiments, the video capturing can occur at the wrist-wearable device,but the sending of capturing video can be performed by a differentdevice (such as a smartphone that might be serving as a communicationintermediary between a wrist-wearable device and a head-worn wearabledevice). More specifically, as shown in FIG. 1D, when the one or morevideo-capturing preconditions are not present, the wrist-wearable device102 will capture and cause sending of audio data only (i.e., thewrist-wearable device 102 will cease capturing video data).Alternatively, when the one or more video-capturing preconditions arepresent, the wrist-wearable device 102 will capture and causing sendingof both audio data and video data to the computing device 350 (by way ofa network) associated with the other user distinct from user 130.Similar to the video-viewing preconditions, the determination whetherthe one or more video-capturing preconditions are present is conductedautomatically and without instructions from the user 130 to make changesin how the device is capturing video and/or audio data. The one or morevideo-capturing preconditions can be based on a variety of sensor data(including, without limitation, sensor data indicating positional data,orientation data, temperature data, the wrist-wearable device 102'sbattery life, the wrist-wearable device 102 power level, and a number ofother factors). Capturing and sending video data is discussed in moredetail below in reference to FIGS. 2-4 .

In some embodiments or circumstances, the wrist-wearable device of theuser may not present video or audio data received from another user(e.g., a counterpart video-calling participant, such as that describedbelow in reference to other user of computing device 350, FIG. 3A) whenthe video-capturing precondition is present at the device 102 but thevideo-viewing precondition is not present. Similarly, in someembodiments or circumstances, video data and audio data can be receivedand presented at the device 102 from the other user of the device 350while the video-viewing precondition is present at the device 102 butthe device 102 might send only audio data to the device 350 of the otheruser because the video-capturing precondition is not present at thedevice 102. The same is true when hardware (e.g., one or more of aspeaker, microphone, camera) of a head-worn wearable device is used inconjunction with the video call instead of analogous hardware at thewrist-wearable device.

Turning to FIG. 1E, in some embodiments, the wrist-wearable device 102is communicatively coupled (e.g., by way of a Bluetooth connectionbetween the two devices, and/or the two devices can also both beconnected to an intermediary device such as a smartphone that providesinstructions and data to and between the two devices, and a lightningbolt is used to graphically depict such a communication connection inthe figures) to another computing device, such as smart glasses 150 (VRgoggles (with or without a heads-up display), AR glasses (with orwithout a heads-up display), other head-mounted displays, or head-wornwearable device). In some embodiments, the smart glasses 150 includespeakers, a microphone, and an imaging device 169 (e.g., a camera orother type of image sensor). In some embodiments, the smart glasses 150include a display 155 (e.g., a heads-up display integrated with one orboth of the lenses of the smart glasses) for presenting visual data tothe user 130. In some embodiments, the speakers, the microphone, theimaging device 169, and the display 155 are integrated and/or coupled toa part of a frame 157 of the smart glasses 150. In some embodiments, thesmart glasses 150 include one or more processors (analogous to thecentral processing unit 1026 and/or a microcontroller unit (MCU) 1052(FIG. 10 )) integrated in the frame 157. In some embodiments, the smartglasses 150 are configured to present an artificial-reality environment(e.g., augmented reality (AR), virtual reality (VR) environment, and thelike) and/or perform one or more commands in an artificial-realityenvironment. In some embodiments, the smart glasses 150 can be anartificial-reality system including, but not limited to, non-immersive,semi-immersive, and fully-immersive VR systems; marker-based,markerless, location-based, and projection-based augmented realitysystems; hybrid reality systems; and other types of mixed realitysystems.

In some embodiments, the wrist-wearable device 102 is configured tocause the smart glasses 150 to one or more of capture, receive, andpresent one or both of audio data and video data. Particularly, in someembodiments, the wrist-wearable device 102 can cause the smart glasses150 to capture and receive audio data and/or video data in accordancewith a determination that the one or more video-capturing preconditionsand/or the one or more video-viewing preconditions are not present atthe wrist-wearable device 102. As explained in more detail below, thetechniques described herein can make use of video-calling andvideo-viewing preconditions that can be evaluated for either or both ofthe head-worn wearable device and the wrist-wearable device, whichpreconditions can be evaluated overall for the two devices or separatelyfor each individual device.

In some embodiments, while the wrist-wearable device 102 causespresentation of video data via its display 115 and audio data via aspeaker that is in communication with the wrist-wearable device 102(e.g., one or both of speaker (or speakers) of the wrist-wearable deviceand speaker (or speakers) of smart glasses 150 (or other head-wornwearable device)), the wrist-wearable device 102 determines whethersensed data from the one or more sensors indicates that a video-viewingprecondition is present at the wrist-wearable device 102. In accordancewith a determination that the video-viewing precondition is not presentat the wrist-wearable device 102, the wrist-wearable device 102continues to cause presentation of the audio data via the speaker thatis in communication with the wrist-wearable device 102 and ceases tocause presentation of the video data via the display of thewrist-wearable device. For example, when the wrist-wearable device 102is moved to a lowered position (which causes the video-videoprecondition to no longer be present at the wrist-wearable device), thewrist-wearable device 102 can cause one or both of its speakers and thespeaker(s) of the smart glasses 150 to present received audio data.

In some embodiments, in accordance with a determination that thewrist-wearable device 102 is in communication with the smart glasses150, the wrist-wearable device 102 causes the speaker(s) of the smartglasses 150 to present audio data to the user 130 instead of the speakerof the wrist-wearable device 102. In some embodiments, the user 130selects which speakers to present the audio data (e.g., by manuallyselecting an audio output via a user interface or predefined usersettings). Alternatively, in some embodiments, the wrist-wearable device102 automatically selects which speaker to present audio data basedsolely on evaluation of one or more video-viewing preconditions. In someembodiments, the wrist-wearable device 102 automatically selects thespeaker to provide a user with an improved experience. For example, inaccordance with a determination that (i) the video-viewing preconditionis not present at the wrist-wearable device 102 and (ii) thewrist-wearable device 102 is communicatively coupled with the smartglasses 150, the wrist-wearable device 102 can automatically select aspeaker communicatively coupled to the wrist-wearable device 102 basedon a distance between the respective devices and the user 130's ears(such that the speaker(s) closes to the user's ears are selected topresent the audio data to make it easier for the user to hear the audiowith less interfering background noise). The above example isnon-limiting, different criteria can be used to select a speakercommunicatively coupled to the wrist-wearable device 102. For example,the wrist-wearable device 102 can automatically select a speakercommunicatively coupled to the wrist-wearable device 102 based on eachdevice's battery life, operating temperature, computing resources,availability (described below in reference to FIG. 4A-4C), and/or otherfactors. In some embodiments, in accordance with a determination thatthe wrist-wearable device 102 is communicatively coupled with smartglasses 150, the speaker that is in communication with thewrist-wearable device that is used to present the audio data is always aspeaker coupled with the smart glasses. Alternatively, in someembodiments, in accordance with a determination that the wrist-wearabledevice 102 is not communicatively coupled with smart glasses, thespeaker that is in communication with the wrist-wearable device 102 thatis used to present the audio data is always a speaker directly coupledwith the wrist-wearable device 102.

In alternative embodiments in which the smart glasses 150 (or otherhead-worn wearable device) have an integrated display 155, ceasing tocause presentation of the video data via the display 115 of thewrist-wearable device can also include, in accordance with adetermination that the smart glasses 150 are communicatively coupledwith the wrist-wearable device 102, causing presentation of the videodata at the display 155 of the smart glasses 150. For example, when thewrist-wearable device 102 is moved to a lowered position (e.g., thevideo-viewing precondition is no longer present at the wrist-wearabledevice), the wrist-wearable device 102 can cause the smart glasses 150to present received audio data and video data (e.g., via the speaker(s)and the display 155).

Additionally, in some embodiments, in conjunction with the determinationthat the video-viewing precondition is no longer present at thewrist-wearable device 102, in accordance with a determination that thewrist-wearable device 102 is communicatively coupled with smart glasses150 worn by the user 130 that include a microphone of the smart glasses,the wrist-wearable 102 causes the smart glasses 150 to capture furtheraudio data via the microphone at the smart glasses 150 and sends thefurther audio data to the device associated with the at least one otheruser (via a network, and, in some instances, also via an intermediarydevice and/or via the wrist-wearable device) in conjunction with thevideo call. In some embodiments, in accordance with a determination thewrist-wearable device 102 is in communication with the smart glasses150, the wrist-wearable device 102 causes only the microphone of thesmart glasses 150 to capture audio data instead of the microphone of thewrist-wearable device 102.

As described above in reference to FIG. 1C, in some embodiments, whilethe video call is ongoing and a video-capturing precondition is presentat the wrist-wearable device 102, the wrist-wearable device 102 capturesadditional video data via an image sensor 135 integrated with thewrist-wearable device 102 and additional audio data via a microphone atthe wrist-wearable device 102, and sends the additional video data andthe additional audio data to a device associated with the at least oneother user participating in the video call. In some embodiments, inaccordance with a determination that the video-capturing precondition isno longer present at the wrist-wearable device 102, the wrist-wearabledevice 102 ceases to capture the additional video data via the cameraintegrated with the wrist-wearable device 102. In other words, thetechniques described herein allow for a sequence of coordinated usage ofhardware components at multiple devices (e.g., hardware of a wristwearable device and hardware of a head-worn wearable device, such assmart glasses) to allow for seamlessly (and automatic, without userintervention or express user requests) switching to use the differentcomponents based on monitoring sensor data (at either or both of themultiple devices) to determine whether video-viewing and video-capturingpreconditions are satisfied. Some other examples of this are providedbelow.

In some embodiments, in conjunction with the determination that thevideo-capturing precondition is no longer present at the wrist-wearabledevice 102, in accordance with a determination that the wrist-wearabledevice 102 is communicatively coupled with smart glasses 150 worn by theuser 130, the wrist-wearable 102 causes the capture of further videodata via the imaging device 169 (e.g., a camera) integrated with thesmart glasses 150 and sends the further video data to the deviceassociated with the at least one other user in conjunction with thevideo call. In some embodiments, in accordance with the determinationthat that wrist-wearable device 102 is communicatively coupled with thesmart glasses 150, the wrist-wearable device 102 causes the capture ofthe further audio data via the microphone at the smart glasses 150 andsends the further audio data to the device associated with the at leastone other user in conjunction with the video call. In this way, thesmart glasses 150 can be caused to capture video data via the imagingdevice 169. In some embodiments, if the smart glasses 150 do not includean integrated imaging device 169, the wrist-wearable 102 only causes thecapture of audio data via the microphone of the smart glasses 150(instead of the microphone integrated on the wrist-wearable device 102).

In some embodiments, in conjunction with the determination that thevideo-capturing precondition is no longer present at the wrist-wearabledevice 102, in accordance with a determination that the wrist-wearabledevice 102 is not communicatively coupled with smart glasses 150 worn bythe user 130, the wrist-wearable device 102 sends only the additionalaudio data to the device associated with the at least one other user inconjunction with the video call.

In some embodiments, the smart glasses 150 (or other head-worn wearabledevice) receive an instruction from the wrist-wearable device 102 thatcauses the one or more processors of the smart glasses 150 to activatethe camera (e.g., imaging device 169) for use in capturing video data inconjunction with a video call initiated at the wrist-wearable device102. The instruction is sent by the wrist-wearable device 102 inaccordance with a determination that a video-capturing precondition isnot present at the wrist-wearable device 102. In response to receivingthe instruction, the smart glasses 150 activate the camera and providevideo data captured by the camera to the wrist-wearable device 102 (orto an intermediary device coordinating communications between the twodevices) until an additional instruction is received from thewrist-wearable device 102 (or from the intermediary device) that causesthe one or more processors of the smart glasses 150 to cease providingthe video data captured by the camera to the wrist-wearable device 102in conjunction with the video call. The additional instruction is sentby the wrist-wearable device 102 (or the intermediary device) inaccordance with a determination that the video-capturing precondition ispresent at the wrist wearable device 102 and upon receiving theadditional instruction, the smart glasses 150 cease to provide the videodata captured by the camera to the wrist-wearable device 102. As noted,the smart glasses 150 can receive instruction from intermediary devicesfacilitating communications between the wrist-wearable device and thehead-worn wearable device, such as tablets, smart phones, laptops, orother electronic devices.

In some embodiments, the instruction received by the smart glasses 150further cause the one or more processors of the smart glasses 150 toactivate its microphone for use in capturing audio data. In someembodiments, the instructions received by the smart glasses 150 furthercause the one or more processors of the smart glasses 150 to activatethe speaker(s) for use in presenting audio data received at thewrist-wearable device 102. In some embodiments, the additionalinstruction causes the one or more processors of the smart glasses 150to also cease providing the audio data. In some embodiments, theadditional instruction causes the one or more processors of the smartglasses 150 to also cease presentation of audio data received at thewrist-wearable device 102 (or at the intermediary device describedabove).

In some embodiments, no determinations as to whether smart glasses 150are or are not communicatively coupled is conducted at all (e.g., forembodiments in which a user 130 does not own any smart glasses 150, thewrist-wearable device 102 can be aware of this and avoid conducting anyother determinations as to presence or absence of smart glasses 150) andinstead, in accordance with the determination that the video-capturingand/or video-viewing preconditions are no longer present at thewrist-wearable device 102, the wrist-wearable device 102 proceeds tocease capturing the additional video data and to send only theadditional audio data in conjunction with the video call (and/or, forthe video-viewing precondition, ceases to present video data andswitches to only present audio data).

In some embodiments, indicators are also provided on either or both ofthe displays of the wrist-wearable device and the smart glasses toindicate the hardware components that are being currently utilized. Forinstance, in the example of FIG. 1E in which a determination is madethat applicable video-viewing and video-capturing preconditions are notpresent at the wrist-wearable device and that the wrist-wearable deviceis communicatively coupled with smart glasses 150 (as shown visually bythe lightning bolt), the display 155 of the smart glasses 150 providesindications to the user 130 with a video-capturing indicator 171,audio-capturing indicator 173, and/or audio-presentation indicator 165to provide the user 130 with quickly-interpretable indicators that acamera, microphone, and speaker, respectively, of the smart glasses arebeing utilized in conjunction with an ongoing video call. In someembodiments, the video-capturing indicator 171 is displayed in a firstcolor (e.g., green), the audio-capturing indicator 173 is displayed in asecond color (e.g., yellow), and the audio-presentation indicator 165 isdisplayed in a third color (e.g., red). Each respective indicator isonly displayed once the corresponding hardware of that device is beingutilized. Alternatively, in some embodiments, when the correspondinghardware is not being utilized, the applicable indicator can bedisplayed with a level of transparency to indicate an inactive state. Insome embodiments, the smart glasses 150 is caused to transmit thecaptured audio and/or video data to an intermediary device or transmitsthe captured audio and/or video data directly to the wrist-wearabledevice 102, either of which device then transmits the captured audioand/or video data to a counterpart device for one or more other usersparticipating in the video call (e.g., the computing device 350, FIG.3A).

Turning to FIG. 1F, the pertinent video-viewing and video-capturingpreconditions are again present at the wrist-wearable device in thisexample, e.g., because the wrist-wearable device is back in a raisedposition 104A. As such, the wrist-wearable device 102 is then configuredto cease causing the smart glasses 150 to transmit, present, and receiveaudio data and/or video data when the one or more video-capturingpreconditions and/or the one or more video-viewing preconditions areonce again present at the wrist-wearable device 102. In other words, thewrist-wearable device 102 communicatively coupled to smart glasses 150is configured to allow the user 130 to seamlessly switch, orautomatically switch between presenting audio data and/or video data atthe wrist-wearable device 102, the smart glasses 150 (or other head-wornwearable device), or a combination of both. In some embodiments, oncehardware of the wrist-wearable is again utilized in conjunction with thevideo call, the indicators 171, 173, and 165 can be displayed at thewrist-wearable device instead of the smart glasses. In some embodiments,the wrist-wearable device can be configured to provide one or more ofthe indicators even when its corresponding hardware is not beingutilized, such that that indicator 171 can be presented on the displayof the wrist-wearable device while the camera of the smart glasses isbeing utilized (the reverse can also be true in that indicators at thesmart glasses can be presented to indicate that hardware of thewrist-wearable device is being utilized in conjunction with the videocall).

In some embodiments, the wrist-wearable device 102 communicativelycoupled to the smart glasses 150 can cause the smart glasses 150 totransmit, receive, capture, and/or present audio data and/or video datato conserve battery power, conserve computing resources, maintain itsoperating temperature at safe operating temperatures, and a number ofother benefits. In some embodiments, the wrist-wearable device 102communicatively coupled to the smart glasses 150 can cause the smartglasses 150 to transmit, receive, capture, and/or present audio dataand/or video data to provide the user 130 an improved user experience.In particular, the smart glasses 150 can be used by the wrist-wearabledevice 102 (or other devices including the functionality of thewrist-wearable device 102 as described herein) to enable the user 130 tohave a personalized experience with easy access to their audio dataand/or video data as well as a platform to capture and share their audiodata and/or video data.

FIGS. 1G-1J illustrate the user 130 transmitting and receiving audiodata and/or video data using a portable device 103, in accordance withsome embodiments. In some embodiments, the portable device 103 monitorssensor data to sense when a user 130 changes a position of the portabledevice 103, which positional changes cause the portable device 103 toautomatically switch (e.g., without an express user request to do theswitching) between video and other modes (e.g., an audio-only mode andother modes that make use of components of another device, such as ahead-worn wearable device) at the portable device 103. The portabledevice 103 can include one or more sensors described below in referenceto FIG. 10 . The portable device 103, similar to the wrist-wearabledevice 102 described above in reference to FIGS. 1A-1D, is configured toreceive and present video and/or audio data via a display 115 and aspeaker, as well as capture video data and/or audio data, via an imagesensor 135 (e.g., a camera) and a microphone. The portable device 103 isalso configured to send the captured data to another device (e.g.,computing device 350; FIGS. 3A-3F) distinct from the portable device103.

In some embodiments, audio and/or video data is presented at theportable device 103 in accordance with a determination, by the portabledevice 103, that one or more video-viewing preconditions are present.For example, as shown in FIG. 1G, the user 130 can receive, at theportable device 103, a video call. In some embodiments, the portabledevice 103 presents on its display 115 a user interface element 120 thatprovides a notification to the user 130 of the incoming video call(e.g., text within the user interface that states “Video CallIncoming”). The user 130 then accepts the video call. While the videocall is incoming, the portable device 103 monitors sensor data to makedeterminations as to whether one or more video-viewing preconditions arepresent at the portable device 103. As described above, whenvideo-viewing preconditions are present, the portable device 103 iscaused to automatically switching between video and other modes (e.g.,including an audio-only mode) during the ongoing video call. When theportable device 103 determines that the video-viewing precondition ispresent at the portable device 103, the portable device 103 causespresentation of video data on its display 115 as shown in FIG. 1H. Morespecifically, the portable device 103, based on a determination thatvideo-viewing preconditions are present (e.g., display 115 of theportable device 103 is raised above the user 130's waist or midsection105), causes received video data to be presented via the display 115 ofthe portable device 103. In some embodiments, the portable device 103presents on its display 115 another user interface element that notifiesthe user 130 that video mode is on.

As shown in FIG. 11 , in some embodiments, the portable device 103 isconfigured to capture audio and/or video data and to send (by way of anetwork) the data to a remote user (e.g., to a computing device 350(FIG. 3A) associated with another user distinct from user 130). In someembodiments, indicators 127 and/or 125 are presented on the display 115of the portable device 103 to provide the user with a visual indicationas to whether audio is being presented (e.g., via speaker indicator 125)and/or audio is being collected by a microphone (e.g., via microphoneindicator 127). Similarly, in some embodiments, the portable device 103captures, via an image sensor 135, and sends (by way of a network)captured video data to a remote user. In some embodiments, the user 130is notified of an ongoing capture via a notification presented on thedisplay 115 (e.g., Video call Ongoing”), as well preview 113 of thecapture video data. The portable device 103 is configured to remain invideo mode and/or capture mode while video-viewing preconditions arepresent and/or one or more conditions described above in reference toFIGS. 1A-1D are satisfied.

When the video-viewing preconditions are not present, the portabledevice 130 can switch to an audio only mode. For example, as shown inFIG. 1J, when the one or more video-capturing preconditions are notpresent (e.g., the user 130 drops the display 115 of the portable device103 to or below their waist or midsection 105), the portable device 103ceases to capture and/or present video data while still presenting,capturing and sending audio data. The portable device 103 can switchautomatically between audio and video modes based on the presence of oneor more video-viewing preconditions. Additional information on thevideo-viewing preconditions, the audio mode, and the video mode areprovided above in reference to FIGS. 1A-1D.

FIGS. 1K-1L show the interaction between a portable device and anothercommunicatively coupled device, in accordance with some embodiments. Forexample, as shown in FIG. 1K, the portable device 103 is communicativelycoupled with smart glasses 150. As described above in reference to FIGS.1E and 1F, the smart glasses 150 include speakers, a microphone, anintegrated display 155, and an imaging device 169 (e.g., a camera orother type of image sensor), and can cause the presentation, capture,and transmission of audio and/or video data. The one or more componentsof the smart glasses 150 can be integrated and/or coupled to a part of aframe 157 of the smart glasses 150. Similar to the interaction betweenthe wrist-wearable device 102 and the smart glasses 150, the portabledevice 103 is configured to cause the smart glasses 150 to one or moreof capture, receive, and present one or both of audio data and videodata. Particularly, in some embodiments, the portable device 103 cancause the smart glasses 150 to capture and receive audio data and/orvideo data in accordance with a determination that the one or morevideo-capturing preconditions and/or the one or more video-viewingpreconditions are not present at the portable device 103.

As further shown in FIG. 1K, in accordance with a determination thatvideo-viewing and/or video-capturing preconditions are not present atthe portable device 103, the portable device 103 can cause presentationof the audio data and video data via the smart glasses 150. The smartglasses 150 can provide a video-capturing indicator 171, audio-capturingindicator 173, and/or audio-presentation indicator 165 to the user 130when audio data is being presented, captured, and/or transmitted.

When the video-viewing and/or video-capturing preconditions are presentat the portable device 103, the portable device 103 can switch thepresentation, capture, and transmission of audio data and/or video datafrom the smart glasses 150 to itself. For example, as shown in FIG. 1L,when video-viewing and/or video-capturing preconditions are againpresent at the portable device 103 (e.g., display 115 of the portabledevice 103 raised above the user 130's midsection 105), the portabledevice 103 causes the smart glasses 150 to cease capturing,transmitting, and presenting audio data and/or video data and starts tocapture, transmit, and present audio data and/or video data via its ownspeakers, microphone, and image sensor 135. The portable device 103 canprovide the user 130 with a visual indication as to whether audio isbeing presented (e.g., via speaker indicator 125), audio is beingcollected by a microphone (e.g., via microphone indicator 127), and/orvideo is being captured (e.g., via video-capturing indicator 171).

Additional information on the interaction between at least twocommunicatively coupled device based on the presence of video-capturingpreconditions and/or video-viewing preconditions is provided above inreference to FIGS. 1E-1F.

The above examples of video-viewing preconditions and video-capturingpreconditions examples are non-exhaustive. In some embodiments, one ormore video-viewing preconditions and video-capturing preconditions arethe same (e.g., the same preconditions are used to determine both whento allow viewing of video data at the wrist-wearable device 102 and whento allow capturing of video data at the wrist-wearable device 102).Alternatively, one or more video-viewing preconditions andvideo-capturing preconditions are distinct (e.g., at least one differentprecondition is used to determine when to allow viewing of video data orwhen to allow capturing of video data, such that video data can bepresented but not captured at the wrist-wearable device 102 or capturedbut not presented at the wrist-wearable device 102). Moreover,video-viewing and video-capturing preconditions can be separatepreconditions (e.g., different satisfaction of different preconditions,which can be based on sensor data, leads to separate satisfaction of thevideo-viewing and video-capturing preconditions), can be the samepreconditions (e.g., satisfaction of the same preconditions, which canbe based on sensor data, leads to satisfaction of both of thevideo-viewing and video-capturing preconditions), can be device-specificpreconditions (e.g., different conditions, which can be separatelyevaluated, for different types of devices), can be preconditionssatisfied based on conditions at different devices evaluated together,and combinations thereof. Additional examples of the video-viewingpreconditions and video-capturing preconditions are provided below inreference to FIGS. 2A-4 .

FIG. 2A illustrates a smart-video presentation process 201 for providingvideo and/or audio data to a user based on presence or absence of one ormore video-viewing preconditions at the wrist-wearable device, inaccordance with some embodiments. The depicted process can beimplemented as a smart-video-presentation management algorithm, whichcan be executed by one or more processors of the wrist-wearable device102 while a video call is ongoing at the wrist-wearable device 102. Inaccordance with the illustrated process, the wrist-wearable device 102is configured to automatically turn video presentation off and on at thewrist-wearable device 102 during an ongoing video call based ondeterminations concerning presence or absence of one or morevideo-viewing preconditions (e.g., based on the data from the one ormore sensors (discussed below in FIG. 10 )).

At “start” point 202 a display 115 of the wrist-wearable device 102presents video and audio data in accordance with a determination (whichdetermination is conducted automatically and without instructions fromthe user) that one or more video-viewing preconditions are present atthe wrist-wearable device 102. The determination that the one or morevideo-viewing preconditions are present at the wrist-wearable device 102is based on data sensed by the one or more sensors (various examplesensors are shown in FIG. 10 ) as described above in reference to FIGS.1A-1F. For example, during an ongoing video call, the wrist-wearabledevice 102 activates a video mode 206 when it detects, via the one ormore sensors, that the one or more video-viewing preconditions arepresent (e.g., data from the one or more sensors, including data from aninertial measurement unit (IMU) indicates that a wrist of the user 130on which the wrist-wearable device 102 is worn is raised to at least thepredetermined raised position discussed above).

While video mode 206 is active, the wrist-wearable device 102 presentsthe video data (via the display 115) and audio data (via a speaker; FIG.10 ) to the user. In some embodiments, the wrist-wearable device 102presents the video data on an entirety of its display 115. Inalternative embodiments, the wrist-wearable device 102 presents thevideo data on a portion of its display 115. In some embodiments, whenthe video mode 206 is turned on, the display will automatically adjustthe display brightness (e.g., increase the display to the highestsetting or adjust the brightness based on ambient lighting conditions(e.g., detected by one or more sensors FIG. 10 )). In some embodiments,the brightness will be the highest possible display brightness asdetermined by the surrounding ambient lighting conditions to ensureproper viewing of the video data.

As further shown in FIG. 2A, the wrist-wearable device 102 deactivates(or turns off) the video mode 206 when the one or more video-viewingpreconditions are not present (an example scenario in which the one ormore video-viewing preconditions are no longer present is illustrated inFIG. 1D). When the video mode 206 is turned off, the wrist-wearabledevice 102 operates in a different calling mode (e.g., in this example,an audio-only calling mode 210 during which only audio data (and/orother non-video data, such as text or a display color) is presented bythe wrist-wearable device 102). For example, in some embodiments, thewrist-wearable device 102 can determine, based on data obtained from thesensors, that the video-viewing preconditions are not present (e.g., inthe example of FIG. 1D, the wrist of the user 130 has been lowered to aposition below the raised position (and below the predetermined raisedposition discussed above) such that the one or more video-viewingprecondition are no longer present). In the above example, because oneor more video-viewing preconditions have not been met, the video mode206 is disabled and the audio-only mode 210 is activated.

In some embodiments, the audio-only mode 210 includes providing ordisplaying, via the display 115, textual or non-video information abouta video or audio call (e.g., indicating that the audio-only mode 210 isactive, providing call information (e.g., caller ID, call length),etc.). For example, the display 115 can present the amount of time thatthe user has been on the call with another person. In some embodiments,the display 115 can present the name of the person that the user isspeaking with. In some embodiments, the display 115 can present an imageof the person that the user is speaking with. In some embodiments, whenthe wrist-wearable device 102 is in the audio-only mode 210, the displaybrightness is lowered. The brightness can be lowered to conserve batterylife, power, keep the temperature of the wrist-wearable device 102cooler, etc. In some embodiments, while the wrist-wearable device 102 isin the audio-only mode 210, the display 115 brightness is lowered to thelowest possible display brightness.

In some embodiments, the wrist-wearable device 102 periodically (e.g.,once every 20 ms) determines whether the one or more video-viewingpreconditions are present, and if the one or more video-viewingpreconditions are present, the wrist-wearable device 102 reactivates thevideo mode 206. For example, while a video call is ongoing and thewrist-wearable device 102 is in the audio-only mode 210, thewrist-wearable device 102 will periodically determine whether the one ormore video-viewing preconditions are once again present (by evaluatingsensor data), and in accordance with a determination that the one ormore video-viewing preconditions are present, the wrist-wearable device102 will once again present audio and video data to the user of thewrist-wearable device 102. In this way, the wrist-wearable device 102adaptively presents audio and/or video data of the user 130 based on thesensor data. In some embodiments, a sensor-based trigger (e.g., athreshold amount of temperature change at the wearable device or athreshold amount of movement of the wearable device indicating apotential change in position, and other like sensor-based triggers) canbe used in addition to, or as an alternative to, a periodic orinterval-based determination as to presence or absence of the one ormore video-viewing preconditions.

While the example of FIG. 2A is described with reference to anaudio-only mode at the wrist-wearable device, a similar process is alsoutilized to switch from using the video calling mode to one of the othercalling besides, including another calling mode in which hardware of ahead-worn wearable device is used instead of analogous hardware at thewrist-wearable device. Examples of this were described above and are notrepeated for brevity, but it should be understood that those examplescould be utilized in conjunction with the smart-video presentationprocess 201 either as alternatives to, or in addition to, use of anaudio-only calling mode.

FIG. 2B illustrates a smart-video capturing process 203 for capturingvideo and/or audio data from a user based on one or more video-capturingpreconditions, in accordance with some embodiments. As described above,the video can be captured via an image sensor 135, and the audio datacan be captured via a microphone. Like FIG. 2A, the depicted process canbe implemented as a smart-video-capturing algorithm, which can beexecuted by one or more processors of the wrist-wearable device 102while a video call is ongoing at the device 102. In accordance with theillustrated process, the wrist-wearable device 102 is configured toautomatically turn the video capturing off and on at the device 102during an ongoing video call based on determinations concerning presenceor absence of one or more video-capturing preconditions (e.g., based onthe data from the one or more sensors (FIG. 10 ).

At “start” point 252 the wrist-wearable device 102 is in videocapture-mode 406 and captures video and audio data. In some embodiments,the wrist-wearable device 102 activates the video-capture mode 256 inaccordance with a determination (which determination is conductedautomatically and without instructions from the user) that the one ormore video-capturing preconditions are present at the wrist-wearabledevice 102. The determination that the one or more video-capturingpreconditions are present at the wrist-wearable device 102 are based onthe data sensed by the one or more sensors (FIG. 10 ). For example,during an ongoing video call, the wrist-wearable device 102 activates avideo-capture mode 256 when it detects, via the one or more sensors,that the wrist of the user 130 is raised to at least the predeterminedraised position. As compared to the video-viewing preconditions, in somecircumstances, the video-capturing preconditions include a preconditionthat is satisfied when sensor data indicates that the wrist-wearabledevice is in a raised position but do not include a precondition relatedto a tilt position of the wrist-wearable device (thus, thevideo-capturing precondition can be satisfied under such circumstances,even when the video-viewing precondition is not satisfied). Additionalexamples are also within the scope of this disclosure, includingdifferent video-viewing and video-capturing preconditions for differenttypes of devices, each of which can be separately evaluated.

In some embodiments, the wrist-wearable device 102 periodicallydetermines whether the one or more video-capturing preconditions arepresent (e.g., every 20 ms while a video calling is ongoing), and if theone or more video-capturing preconditions are present, thewrist-wearable device 102 captures, via image sensor 135 (e.g., acamera) and/or a microphone, video data and audio data, respectively.The wrist-wearable device 102 further transmits (or sends) the capturedvideo data and/or audio data to one or more other devices (e.g., devicesdistinct from the wrist-wearable device 102, such as computing device350 of a counterpart video-calling participant). For example, while avideo call is ongoing, the wrist-wearable device 102 will periodicallydetermine whether the one or more video-capturing preconditions arepresent, and in accordance with determining that the one or morevideo-capturing preconditions are present, the wrist-wearable device 102will capture and send video data and audio data of the user to acomputing device 350 (e.g., via a network). Alternatively, if the one ormore video-capturing preconditions are not present, the wrist-wearabledevice 102 turns the video-capture mode off 260 and captures only audiodata, via the microphone. Another example is one described earlier, inwhich instead of switching to capture audio data only, if it isdetermined that the wrist-wearable device is communicatively coupledwith a head-worn wearable device, hardware of the head-worn wearabledevice can be used in conjunction with the video call (e.g., a camera,microphone, and/or speaker of the head-worn wearable device can be usedin various circumstances). FIG. 2B also shows that in these otherexamples in which a head-worn wearable device is determined to becommunicatively coupled to the wrist-wearable device, and after makinguse of the camera of the head-worn wearable device for capturing videodata for the ongoing video call instead of the camera of thewrist-wearable device, the display of the wrist-wearable device candisplay indicator 171 to visually indicate that the camera of thehead-worn wearable device is being utilized. In this way, thewrist-wearable device 102 adaptively captures audio and/or video data ofthe user 130 based on the sensor data. For example, the wrist-wearabledevice 102 can switch between capturing video and audio data andcapturing only audio data based on the user raising and lowering theirwrist, turning their wrist (and the display 115 and/or imaging sensor135 away and toward the user, etc.). In some embodiments, thewrist-wearable device 102 determines (concurrently with thedetermination that the one of the video-viewing preconditions arepresent) whether one or more video-capturing preconditions are present.

In some embodiments, while the one or more video-capturing preconditionsare present, the wrist-wearable device 102 presents the additional videodata along with the received video data. In other words, the user's ownvideo (e.g., reflection video in real-time, pre-recorded video, etc.)can be shown on a portion 265 of the display 115 along with video datareceived from a device of a counterpart video-calling participant(associated with another person (other than the user 130); e.g.,computing device 350, FIG. 3A). Alternatively, in some embodiments,while the video call is ongoing and the one or more video-capturingpreconditions are present at the wrist-wearable device 102, the user'sface is replaced on the portion 265 of the display with an avatarrepresenting the user's face. For example, rather than including onlylive video data captured by the image sensor 135 at the wrist-wearabledevice, the additional video data can be modified to include an avatarin place of the user's face as it was captured by the image sensor 135with the live video data. In this way, the wrist-wearable device 102conserves battery power by reducing the total amount of information thatis presented by the display 115. As discussed below, thisavatar-replacement feature can be performed based on a request from auser to do so or can be done automatically, without user input, based ondeterminations made using additional biometric sensor data (and/or othersensor data) from the one or more sensors.

In some embodiments, the wrist-wearable device also provides hapticfeedback each time it switches between calling modes (e.g., from a videocalling mode to an audio-only calling mode or to a calling mode in whichhardware of a head-worn wearable device is utilized). The hapticfeedback can be different depending on which mode is being activated(e.g., different haptic feedbacks are provided for each of (i) videomode; (ii) audio-only mode; and (iii) calling mode in which hardware ofthe head-worn wearable device is utilized).

As described above, the wrist-wearable device 102 can switch betweencapturing audio and video data and capturing only video data based onone or more video-capturing preconditions being present or not. Forexample, in some embodiments, the wrist-wearable device 102 candetermine, based on data obtained from the sensors, that the wrist ofthe user 130 has been lowered to a position below a raised position andbelow a predetermined raised position (i.e., not satisfying avideo-capturing preconditions). In some embodiments, the wrist-wearabledevice 102 can determine, based on data obtained from the sensors, thatthe lighting is too bright or that there is not enough lighting toaccurately or clearly capture video data of the user such that avideo-capturing precondition is not met. In the above examples, becauseone or more video-capturing preconditions have not been met, thewrist-wearable device 102 captures and sends, to the computing device350, only audio data (and/or uses a camera from another device, e.g.,from a head-worn wearable device, to capture video data for use duringthe video call). In some embodiments, the wrist-wearable device 102 cansend an avatar 275, a saved image, or a pre-recorded video for displayat the computing device 350 during the video call.

In some embodiments, the wrist-wearable device 102 periodicallydetermines whether the one or more video-capturing preconditions arepresent, and if the one or more video-capturing preconditions arepresent, the wrist-wearable device 102 activates the video-capture mode256 (i.e., when the one or more video-capturing preconditions arepresent, the video-capture mode 256 is enabled or turned on again). Forexample, while a video call is ongoing and the video-capture mode is off260, the wrist-wearable device 102 will periodically (e.g., once every20 ms, or each time a sufficient change in sensor data is detected as atriggering condition to conduct the determination again) determinewhether the one or more video-capturing preconditions are present, andin accordance with the one or more video-capturing preconditions beingpresent, the wrist-wearable device 102 will capture and send video dataand audio data of the user to a computing device 350. In this way, thewrist-wearable device 102 adaptively presents audio and/or video data tothe user 130 based on the sensor data. For example, the wrist-wearabledevice 102 can switch between the video-capture mode on 406 andvideo-capture mode off 260 based on the user raising and lowering theirwrist, turning their wrist (and the display 115 away and toward theuser, etc.).

FIGS. 3A-3F illustrate example user interfaces used in conjunction withpresenting video-mode data or data for other calling modes based onwhether one or more video-viewing preconditions are satisfied at awrist-wearable device, in accordance with some embodiments. FIGS. 3A-3Falso illustrate example user interfaces used in conjunction withcapturing video and/or audio data based on whether one or morevideo-capturing preconditions are satisfied at a wrist-wearable device,in accordance with some embodiments. As described above, thewrist-wearable device 102 can receive audio and/or video data fromanother device 350 associated with another user during an ongoing videocall. In particular, wrist-wearable device 102 communicatively coupleswith the other device 350 via network 360, which allows thewrist-wearable device 102 and the other device 350 to transmit andreceive data with one another. In some embodiments, the wrist-wearabledevice 102 includes hardware capable of data communications using any ofa variety of custom or standard wireless protocols (e.g., IEEE 802.15.4,Wi-Fi, ZigBee, 6LoWPAN, Thread, Z-Wave, Bluetooth Smart, ISA100.11a,WirelessHART, or MiWi), custom or standard wired protocols (e.g.,Ethernet or HomePlug), and/or any other suitable communication protocol,including communication protocols not yet developed as of the filingdate of this document. Examples of the network hardware are providedbelow in reference to FIG. 10 .

In some embodiments, while in video mode 206 (FIG. 2 ), thewrist-wearable device 102 monitors the temperature (at thewrist-wearable device 102) via the one or more sensors. In accordancewith a determination that a temperature at the wrist-wearable device 102reaches or exceeds a predefined temperature value (e.g., between 40-50degrees Celsius), the wrist-wearable device 102 presents, via thedisplay 115, a user interface element (e.g., first warning message 314)notifying the user 130 that the wrist-wearable device 102 needs to cooldown. In some embodiments, the warning message 314 includes instructionsindicating how a user 130 can lower the temperature of thewrist-wearable device 102. For example, while the wrist-wearable device102 is the video mode 206 and after determining that the predefinedtemperature value has been reached or exceeded (e.g., reaching orexceeding a predefined temperature value of greater than 46 degreesCelsius), the wrist-wearable device 102 can present a first warningmessage 314 instructing the user 130 to either lower their wrist(activating audio-only mode 210 (FIG. 2 ) or one of the other callingmodes described herein that does not use the wrist-wearable device'scamera for video-capturing purposes) or manually disable video calling(manually enabling audio-only mode 210 (e.g., by pressing the videotoggle button 320 described below in FIG. 3D)) to ensure that thewrist-wearable device 102 is able to cool down. In some embodiments, thewrist-wearable device 102 presents the first warning message 314 afterthe predefined temperature value has been measured (e.g., sensed via thesensors) for a first period of time (e.g., 4, 4.5, or 5 seconds). Inother words, the wrist-wearable device 102 has been at or exceeded thepredefined temperature value for a first period of time. In this way,the wrist-wearable device 102 first attempts to prevent excessivebattery drain and or damage to other components or the user based onhigh temperatures by asking the user to take a specified action (e.g.,lowering their wrist or arm, or interacting with a user interface on thewrist-wearable device to manually switch to an audio-only mode duringthe ongoing video call).

As shown in FIG. 3A, the user interface element that includes thewarning can be displayed as text that is overlaid on top of the videodata that is being presented on the display 115 of the wrist-wearabledevice 102. While this one example uses a textual warning to the user130, other embodiments can also use other feedback to provide warningsto a user 130 in conjunction with the textual warning or as alternativesthereto (for instance, an audio warning can be presented, and/or hapticfeedback can be provided, etc.). Further, even though the warningmessage 314 is displayed to the user 130, the wrist-wearable device 102continues to capture audio and video data and send the captured audioand video data, via the network 360, to the other computing device 350.

Turning to FIG. 3B, the wrist-wearable device 102 can provide more thanone warning message (e.g., second warning massage 316 after havingearlier provided first warning message 314). For example, while thewrist-wearable device 102 is in the video mode 206 and after determiningthat the predefined temperature value has been exceeded for the firstperiod of time, the wrist-wearable device 102 can present a secondwarning message 316 informing the user 130 that the video will bedisabled after a second period of time (e.g., 5 seconds). When the videois disabled, the wrist-wearable device 102 switches to audio-only mode210 (or to a calling mode in which hardware at another device isutilized) to allow the wrist-wearable device 102 to cool down. In someembodiments, the video mode 206 can be turned off (and replaced with theaudio-only mode 210), by the user 130 selecting (e.g., tapping on topof) the second warning message 316. The second warning message can alsobe dismissed by closing (e.g., swiping up, selecting an exit box, etc.)the second earning message 316. In some embodiments, the wrist-wearabledevice 102 presents the second warning message 316 after the predefinedtemperature value has been measured (e.g., sensed via the sensors FIG.10 ) for an additional period of time (in this case 10 secondsexpiration of the first period of time has already expired). In otherwords, the wrist-wearable device 102 has been at or exceeded thepredefined temperature value for the first period of time plus theadditional period of time. In some embodiments, the first and additionalperiods of time can be dynamically adjusted based on battery life of thewrist-wearable device 102 (e.g., increasing or decreasing these periodsof time based on the remaining battery life) and/or based on powerconsumption at the wrist-wearable device 102 (e.g., increasing ordecreasing these periods of time based on the power being used by thewrist-wearable device 102).

In some embodiments, each warning message is associated with a differentpredefined temperature value. For example, the first warning message 314can be associated with a first predefined temperature value (e.g., 42degrees Celsius) and the second warning message 316 can be associatedwith a second predefined temperature value greater than the firstpredefined temperature value (e.g., 46 degrees Celsius).

In some embodiments, the wrist-wearable device 102 can replace theuser's own video (e.g., reflection video in real-time, pre-recordedvideo, etc.) shown on portion 265 of the display 115, with the user'savatar 275 or a saved image. This allows the wrist-wearable device 102to continue to capture and send audio and video data to the othercomputing device 350, via the network 360, while also conserving energyand processing power by limiting the amount of information that ispresented to the user 130 via the display 115. In some embodiments, theuser 130 can manually enable the data presented in the portion 265 ofthe display 115 (e.g., their captured image data, avatar, saved image,pre-recorded image, etc.).

After the additional period of time, if the wrist-wearable device 102 isstill in the video mode 206 (e.g., video call is still ongoing and theuser has not taken an action to manually switch to audio-only mode), athird warning message 318 is presented by the wrist-wearable device 102(e.g., via the display 115). For example, as shown in FIG. 3C, the thirdwarning message 318 states that the video mode 206 has been replacedwith an audio-only (or other) mode 210 until the temperature conditionsat the wrist-wearable device are sufficiently low to allow forpresenting and/or sending video content again. In some embodiments, boththe temperature conditions (which can be one of the video-viewingpreconditions) and the other video-viewing preconditions must all bepresent at the wrist-wearable device again before presentation and/orcapturing of video data would resume. In other embodiments, once theswitch is made to audio-only (or other) mode 210 due to temperaturedata, then the device never switches back to presentation and/orcapturing of video data for the ongoing video call (e.g., due to asafety issue having been detected, the device 102 will not switch backto presentation and/or capturing of video data for the ongoing videocall, but it could switch back for subsequent video calls).

Instead of or in addition to using the first and additional periods oftime, in some embodiments, the wrist-wearable device 102 can alsoutilize an additional predefined temperature value (that is greater thanthe predefined temperature value) to cause the device to immediatelyswitch to the audio-only mode 210 without regard to how long the device102 has been at any particular temperature value. In some embodiments,when the video mode 206 is inactive (or turned off), the wrist-wearabledevice 102 presents an avatar associated with the video-call counterpartparticipant (e.g., the user of device 350, FIG. 3C). In this way, thewrist-wearable device 102 conserves battery power or lowers its internaltemperature by displaying an avatar instead of actual video data.Alternatively, in some embodiments, when the video mode 206 is inactive(or turned off), the computing device presents only audio data (via aspeaker).

In some embodiments, after displaying a warning message (e.g., any ofthe first, second, or third warning messages 314, 316, and 318), inaccordance with a determination that the temperature at thewrist-wearable device has reached or exceeded a predefined temperaturevalue for a threshold period of time and in accordance with adetermination that the wrist-wearable device 102 is communicativelycoupled with smart glasses 150 worn by the user 130, the wrist-wearabledevice 102 causes the smart glasses 150 (head-mounted display or otherhead-worn wearable device) to present audio data and/or video data via aspeaker and display integrated in the smart glasses 150. Additionally,in some embodiments, the wrist-wearable device 102 can cause the smartglasses 150 to capture audio data and/or video data via an imagingdevice and/or microphone integrated in the smart glasses 150. Additionalinformation on use of the smart glasses 150 (or other head-worn wearabledevice) is provided above in reference to FIG. 1E.

In some embodiments, a temperature check can serve as a safety override,such that even if the video-viewing precondition is present (andtherefore would normally allow for continued operation in the video mode206), that will be overridden by a determination that conditions at thewrist-wearable device are no longer safe for continued operation in thevideo mode 206.

In some embodiments, the temperature at the wrist-wearable device 102 isa temperature value that is determined based on more than onetemperature input, including one or more of the following temperatureinputs: an ambient temperature near the wrist-wearable device, atemperature of the user's skin near the wrist-wearable device, and atemperature of a battery that is powering the wrist-wearable device. Inother words, no single temperature measurement is used to arrive at atemperature of the wrist-wearable device, but instead the temperaturefor the wrist-wearable device is a combined or weighted value based onthe multiple different temperature inputs described above.

As shown in FIG. 3D, in some embodiments, in conjunction with an ongoingvideo call (and during either or both of the audio-only mode or othercalling mode, and the video mode) the display 115 can present one ormore icons. In some embodiments, a first icon can be a video togglebutton 320 through which the user is able to manually enable or disablethe capture of video data. For example, when a user 130 presses thevideo toggle button 320, the wrist-wearable device 102 switches betweencapturing (and sending) only audio data and capturing (and sending) bothaudio and video data. In some embodiments, once the temperature valuesdiscussed above have been exceeded, the video toggle button 320 isdisabled to protect the wrist-wearable device 102 from damage (e.g.,over heating), prevent the capture of video data if thistemperature-specific video-capturing precondition is not present(preventing the accidental capture of video data), thereby extending thetotal battery life of the wrist-wearable device 102 and ensuring a safeoperation of the device 102. For example, as shown in FIG. 3E, after thewrist-wearable device 102 disables capturing video data in response tothe predefined temperature value being exceeded (e.g., greater than 42degrees Celsius), the device 102 also disables the video toggle button320 to allow the wrist-wearable device 102 to cool down, such that anysubsequent input at the video toggle button then causes display of thetextual message shown on the display 115 in FIG. 3E. In someembodiments, the wrist-wearable device 102 sends the user's avatar 275or saved image to the computing device 350 to be displayed at thecomputing device 350 in place of the user's captured video data.

In some embodiments, a second icon is a mute button 322. In thisembodiment, the mute button 322, when selected, is configured to mute,or unmute the user's microphone. In other words, the mute button 322allows the user to manually toggle (enable or disable) the audio datacaptured by the wrist-wearable device 102 (once the mute button 322 hasbeen pressed during an ongoing video call, then the device 102 would nolonger send audio data to the device 350 of the video-call counterpartparticipant). In some embodiments, a third icon is the end-call button324. In some embodiments, when the user selects the end-call button 324,the video call is terminated, thereby causing the device 102 to ceaseoperating in the audio-only mode 210 and/or video mode 206. In someembodiments, when the user selects the video toggle button 320 while itis in its disabled state, the wrist-wearable device 102 displays, on thedisplay 115, a fourth message 326. In this example, the fourth message326 is presented in response to the user selecting the video togglebutton 320 before the wrist-wearable device 102 has been able to cooldown. For example, the fourth message 326 can state that the video mode206 (or video-capture mode 256) is unavailable. In some embodiments, thefourth message 326 suggests an amount of time to wait before tryingagain (e.g., try again in a few minutes, estimated cool down in 5minutes, etc.). In some embodiments, the fourth message 326 provides arecommendation for the user to take to enable the video mode 206 (e.g.,plug the device into a power source).

In some embodiments, the display 115 is operated in a low-power modeduring the duration of the audio-only mode 210 (or other calling mode inwhich hardware of another device is utilized instead of hardware of thewrist-wearable device). In some embodiments, the display 115 can also beturned off even while the wrist-wearable device 102 continues to causepresentation of only the audio data, which thereby helps the device 102to cool down more quickly, thereby extending battery life.

Other messages can also be presented during the ongoing video call. Forinstance, if the device 102 moves in proximity (e.g., within ashort-range communication range, such as Bluetooth low-energy range) ofanother device associated with the user of the wrist-wearable device(e.g., the user's laptop, tablet, tv, etc.), the device 102 can causepresentation of a message asking the user whether the video and audiodata (depending on which modes the device 102 is operating in) should bepresented at the other device instead. In some embodiments orcircumstances, transferring the presentation of audio and/or video datato the other device can occur automatically based on the user'spreferences to do so automatically. One example of this is shown inFIGS. 4A-4C, in which the device 102 has moved within short-rangecommunication range of the other device 450 (here, a laptop) and, thus,the presentation of video and audio data from an ongoing video callswitches over to the other nearby device that is also associated withthe user of the device 102. In these examples, association with the usercan be based on each device being signed into a common accountassociated with the user (e.g., a social media or other account for theuser). Another example is that described specifically above withreference to use of video-viewing and video-calling preconditions toautomatically, and without express instructions from a user, cause theswitching from using hardware of the wrist-wearable device to insteadmake use of hardware of the head-worn wearable device under thecircumstances (and determinations using sensor data) as described aboveand below.

In FIG. 3F, in accordance with a determination that the temperature atthe wrist-wearable device 102 is below the predefined temperature valueand that the video-viewing preconditions are present at thewrist-wearable device once again, the display of the video data at thedisplay 115 of the wrist-wearable device 102 can be automaticallyresumed without any express instruction from a user requesting suchresuming. In some embodiments, a fifth message 328 is displayed whichinforms the user that the video-viewing preconditions are satisfied onceagain. In some embodiments, the fifth message 328 can state that thevideo mode 206 is available again. In some embodiments, the video togglebutton 320 is also re-enabled and the user can select the video togglebutton 320 to manually enable the capture of video data. In someembodiments, the video toggle button 320 can be used to allow the imagesensor 135 to continue to capture data regardless of the position of thewrist-wearable device 102. For example, a user may wish to share videodata captured using a front image sensor 135 (shown in FIG. 9A) whilethe display is facing away from the user, the user can press the videotoggle button 320 to continuously allow the image sensor 135 to capturevideo data (i.e., temporarily disabling the automatic switching betweenaudio-only mode 210 and video mode 206). In some embodiments, thewrist-wearable device 102 automatically switches from audio-only mode210 back to video mode 206 once the temperature-safety issues areresolved (device 102 has cooled to safe temperature) and the pertinentvideo-viewing preconditions are present again (device 102 in raisedposition, etc.).

In some embodiments, the wrist-wearable device 102 limits the datapresented to the user in order to allow the user to continue to providevideo and audio data. For example, if the video-capture mode 256 is on,the computing device 350 can continue to receive, via the network 360,captured video and audio data from the wrist-wearable device 102 whilethe user 130 is only presented with audio data. In some embodiments,another message is displayed which informs the user that the imagesensor 135 is on. In some embodiments, the wrist-wearable device 102automatically enables the capture of video data when the video-capturingpreconditions are present. In some embodiments, the wrist-wearabledevice 102 automatically switches from video-capture mode off 260 backto video-capture mode on 406 once the video-capturing preconditions arepresent.

While the primary examples provided in FIGS. 3A-3F relate to use ofvideo-viewing preconditions to manage power consumption and processorutilization at the wrist-wearable device 102 during a video call (e.g.,by automatically and without user intervention switching betweenaudio-only mode 210 and video mode 206), the use of video-viewingpreconditions also applies to other circumstances in which awrist-wearable device is presenting a video stream, such as playing amovie, tv show, or other video content, and also to capturing scenariosin which the camera is being used to capture a video outside of thevideo-calling context. Thus, the techniques described herein are notlimited to use in conjunction with video calling alone but are insteadapplicable to additional circumstances in which video content ispresented at a wrist-wearable device such that the ability tointelligently switch between displaying video and displaying audio onlyhelps to properly manage power consumption at the wrist-wearable devicefor various types of video data that can be presented at awrist-wearable device. Similarly, the use of video-capturingpreconditions also applies to use case outside of video calls, such ascapturing of video data using a camera of the wrist-wearable device butnot during an ongoing video call (e.g., creating a family video using acamera of the wrist-wearable device), such that the device canautomatically switch between capturing video and audio data oraudio-only data depending on determinations related to presence orabsence of the video-capturing preconditions described herein. Moredetails on these other example contexts for these other techniques areprovided below in reference to FIGS. 6, 7, 11, and 12 (as well as abovein the summary section).

The examples provided in FIGS. 2-3F for the video-viewing preconditionscan also apply to the video-capturing preconditions. For example, if thewrist-wearable device 102 determines that the temperature thresholdsdescribed above have been exceeded, then the warning messages canindicate not only that video will no longer be presented, but also thatvideo will no longer be captured by the device 102 (in some embodiments,video capturing can be disabled before video presentation is disabled asvideo capturing can often user more power and processing resources thanvideo presentation).

FIGS. 4A-4C illustrate the wrist-wearable device 102 detecting anotherelectronic device associated with the user and using the otherelectronic device associated to the user to present, capture, and/orsend audio and video data during an ongoing video call, in accordancewith some embodiments. In some embodiments, the wrist-wearable device102 detects when the other electronic device 450 is located in proximityto (e.g., within a short-range communication range, such as Bluetoothlow-energy range) the wrist-wearable device 102. In some embodiments,the wrist-wearable device 102 detects the other electronic device via anetwork 360 (e.g., a Wi-Fi or a cellular network). As described above inFIGS. 3A-3F, when wrist-wearable device 102 moves within proximity ofthe other device 350 associated with the user of the wrist-wearabledevice 102 (e.g., the user's laptop, tablet, tv, etc.), the device 102can cease to present video and audio data (depending on which modes thedevice 102 is operating in) at the display of the device 102 and caninstead cause presentation of the video and/or audio data at the otherdevice (in certain embodiments, switching to capture video and/or audiovia the other device can also occur).

For example, as shown in FIG. 4A, the user is initially far away fromhis laptop (electronic device 450), and as such, video and audio datareceived from the computing device 350 is presented to the user 130 viathe display 115 and the speaker of the wrist-wearable device 102.Similarly, the wrist-wearable device 102 can capture video data andaudio data of the user 130 (via an image sensor 135 and microphone;FIGS. 1A-1F) and send the captured video data to the computing device350, via the network 360.

When the user 130 approaches the electronic device 450, thewrist-wearable device 102 detects the electronic device 450 withinproximity of the device 102, and, as shown in FIG. 4C, causes theelectronic device 450 to receive and present audio and video datareceived from the computing device 350 (in some embodiments, the videocall is transferred to the device 450 such that the device 102 ceases toreceive the video and audio data entirely; in other embodiments, dataassociated with the video call is relayed from the device 102 to thedevice 450 for presentation at the device 450, such that device 102serves as a relay for the video call data). In some embodiments,capturing of video and audio data in conjunction with the video call isalso transferred to the other device (e.g., device 450); while in otherembodiments, the device 102 continues to capture video and audio data,and then sends the captured user video and audio data to the computingdevice 350.

As further shown in FIG. 4C, once the presentation and/or capturing ofvideo and audio data for the video call is transferred to the device450, the video call can continue even if a video-viewing precondition(or video-capturing precondition) is not present (e.g., user's wristposition is in a lowered position).

In some embodiments or circumstances, transferring the presentation ofaudio and/or video data to the other device can occur after a user tapson a user interface element displayed on the display 115 of the device102, or can occur automatically based on the user's preferences to do soautomatically once the device 102 is determined to be in proximity to atrusted device, such as device 450 in the depicted example of FIGS.4A-4C.

In some embodiments, the association of devices (e.g., device 102 anddevice 450) with the user can be based on each device being signed intoa common account associated with the user (e.g., a social media or otheraccount for the user). In some embodiments, the association with theuser can be based on each device being part of the same private networks(e.g., a home Wi-Fi, a hotspot, etc.). In some embodiments, theassociation with the user can be based the use of authentication tokens(e.g., authentication keys sent to one another via Bluetooth).

In some embodiments, the electronic device 450 must have either alarger-capacity battery than a battery of the wrist-wearable device 102,or a connection to a power source in order to be made available for thetransferring of video and/or audio data discussed above. In someembodiments, in accordance with a determination that a display of theother electronic device 450 is available, the video mode 206 of thewrist-wearable device 102 is stopped and the presentation of the videoto the display of the other electronic device 450 is started. Similarly,the wrist-wearable device 102 can switch from capturing video data fromits image sensor 135 to capturing data from the electronic device 450'simage sensor (if available). If the electronic device 450 does not havean image sensor or the image sensor is unavailable, the wrist-wearabledevice 102 can continue to capture video data using its own image sensor135 while disabling the display 115. In this way, by making use ofdisplay capabilities of nearby devices, the techniques described hereincan further help to reduce power-consumption and temperature levels atthe wrist-wearable device, thereby helping to avoid draining the batteryof the wrist-wearable device 102, avoid unsafe temperature conditions atthe wrist-wearable device, and ensuring longer video calls by making useof displays available at nearby devices. While device 450 is depicted asa desktop computer in FIGS. 4A-4C, the other electronic device 450 canalso be a laptop, a tablet, a smartphone, a smart display, and othersimilar devices. The proximity-based use of hardware capabilities ofother devices can be used in addition to the use of hardwarecapabilities specifically from a head-worn wearable device (as describedbelow in reference to FIGS. 6, 7, 11, and 12 ), such that video-viewingand capturing preconditions can be used to cause seamlessly switchingbetween hardware components of a head-worn wearable device andwrist-wearable device, while separately using the proximity-basedtechniques described with reference to 4A-4C as well.

FIGS. 5A-5C illustrate the wrist-wearable device 102 replacing theuser's face with an avatar representing the user's face while the videocall is ongoing and the video-capturing precondition is present at thewrist-wearable device 102, in accordance with some embodiments. In someembodiments, the wrist-wearable device 102 replaces the user's face 510with an avatar 275 in accordance with a determination that additionalsensor data from the one or more sensors (FIG. 10 ) indicates that theuser's face 510 should be replaced in the additional video data. Forexample, in some embodiments, the wrist-wearable device 102 replaces theuser's face 510 with an avatar representing the user's face 275 when itis determined that the user 130 wants privacy based on his location data(e.g., within his bedroom, in the bathroom, at the gym, etc.). Inanother example, in some embodiments, the wrist-wearable device 102replaces the user's face 510 with an avatar representing the user's face275 based on captured biometric data, such as an elevated heart rateindicating that the user is exercising or dealing with elevated levelsof stress. In another example, the sensor data can indicate that theuser 130 has just woken up and replaces the user's face 510 with anavatar representing the user's face 275 as he may be disheveled. Inaddition to avatars that can mirror a user's facial expressions and headand/or body pose positions, in some circumstances (e.g., when theaudio-only mode is activated) an avatar image (a fixed image rather thana dynamic avatar) can replace a user's profile photo during a call. Thisavatar-replacement can be made active based on an express opt-in fromusers that would like to make use of this feature, such that the featureis disabled by default and only activated based on express user consentbeforehand.

As shown in FIGS. 5A-5C, the user 130 can be approaching his bedroom orbed 520 (shown schematically next to the user as bed 520 in FIG. 5C),and the wrist-wearable device 102 (after the user has opted-in to makeuse of this avatar-replacement feature), using the user's location datacaptured by the one or more sensors, can determine that when the user130 is in his bedroom, that the user would like his privacy and replacethe captured video data with the avatar 275. This allows the user tocontinue communicating with the computing device 530 while also allowingthe user 130 to maintain their privacy. The above examples arenon-limiting. The wrist-wearable device 102 can use any captured sensordata or combination of sensor data to make a determination that theuser's face 510 should be replaced with an avatar 275 representing theuser's face. In some embodiments, the user 130 can specify one or morescenarios, locations, and/or sensed sensor data in which his or her faceshould be replaced with an avatar representing his or her face.

One non-limiting example as to how the wrist-wearable device cangenerate an avatar that replaces a user's face during a video call (andcan still move with the user and represent the user's facialexpressions) is now described. In some embodiments, the avatar isgenerated using one or more neural networks and feature maps, such as afirst neural network, a second neural network, and a neural texture. Insome embodiments, when each neural network and feature map is trained,parameters for the neural texture, the first neural network, and thesecond neural network are randomly initialized. For an iteration of atraining process, the wrist-wearable device 102 (or other computingdevice, such as computer, a sever, etc.) generates a training renderedimage of the user. To generate the training rendered image, thewrist-wearable device 102 (or other computing device) can construct athree-dimensional training geometry to represent the user in a trainingpose captured by an image sensor 135 image frame based on a body shapemodel. In some embodiments, the three-dimensional training geometry(e.g., a coarse mesh representation) is obtained by solving an inversekinematic problem to fit the posed body shape to a 3D point cloud. Thewrist-wearable device 102 (or other computing device) can also useadditional detected body key points to construct the three-dimensionaltraining geometry. The wrist-wearable device 102 (or other computingdevice) can generate a first training rendered neural texture based on aUV mapping between (1) a portion of the three-dimensional traininggeometry that is visible from a viewing direction of the frame and (2)the neural texture. Each texel (or texture element) of the neuraltexture can have k-channel latent representation. As such, the firsttraining rendered neural texture can also include k latent channels.Although this example describes generating the first training renderedneural texture during a training of the neural texture, the first neuralnetwork, and the second neural network in a particular manner, otherexamples can generate the first training rendered neural texture duringa training of the neural texture, the first neural network, and thesecond neural network in any suitable manner.

In some embodiments, the wrist-wearable device 102 (or other computingdevice) generates an avatar (or a virtual image) of the user using thetrained neural texture, the first neural network, and the second neuralnetwork. In some embodiments, the wrist-wearable device 102 (or othercomputing device) adjusts parameters of a three-dimensional geometrycorresponding to the user to make the three-dimensional geometryrepresent a desired pose for the user. In some embodiments, thewrist-wearable device 102 (or other computing device) accesses a neuraltexture encoding an appearance of the user. In some embodiments, thewrist-wearable device 102 (or other computing device) generates a firstrendered neural texture based on a mapping between (1) a portion of thethree-dimensional geometry that is visible from a viewing direction and(2) the neural texture. The first rendered neural texture can includelatent channels. In some embodiments, the wrist-wearable device 102 (orother computing device) generates a second rendered neural texture byprocessing the first rendered neural texture using a first neuralnetwork. The second rendered neural texture can include color channelsand latent channels. In some embodiments, the wrist-wearable device 102(or other computing device) determines normal information associatedwith the portion of the three-dimensional geometry that is visible fromthe viewing direction. In some embodiments, the wrist-wearable device102 (or other computing device) generates a rendered image for the userin the desired pose by processing the second rendered neural texture andthe normal information using a second neural network (i.e., generates anavatar). In some embodiments, a rendered image for the user can bemodified by swapping at least a part of the neural texture. In someembodiments, wrist-wearable device 102 (or other computing device)identities a pose of the user. In some embodiments, the neural texturescan be mix-and-matched between previously trained neural textures. Thisis just one example of a technique more generating an appropriateavatar, others are also within the scope of this disclosure, as one ofskill will appreciate upon reading this disclosure.

FIG. 6 illustrates a flow diagram of a method for presenting audioand/or video data at a wrist-wearable device during a video call, videorecording, video stream, or other video content being presented at awrist-wearable device, according to some embodiments. The methodincludes receiving (602) at a wrist-wearable device 102 (FIGS. 1A-1F)that is coupled with one or more sensors (FIG. 10 ), video data andaudio data associated with a video call, video recording, video stream,or other video content.

After receiving the video data and audio data, the wrist-wearable device102 determines whether the sensed data (e.g., from the sensors such as aheart rate sensor 1058, EMG sensor 1046, SpO2 sensor 1054, altimeter1048, thermal sensor or thermal couple, ambient light sensor, ambientnoise sensor 1058, 1054, and/or IMU 1042 (FIG. 10 )) of thewrist-wearable device 102) indicates (604) that a video-viewingprecondition is present. In some embodiments, the video-viewingprecondition is a position and/or orientation of the wrist-wearabledevice 102, a battery life, maximum temperature of the device, minimumpower requirements (e.g., the wrist-wearable device 102 has exited a lowpower mode, the wrist-wearable device is connected to a power source,etc.), etc., with additional descriptions and examples provided earlierabove. The wrist-wearable device 102 can determine whether more than onevideo-viewing precondition is present simultaneously. The wrist-wearabledevice 102 can also determine whether one or more video-viewingpreconditions are present automatically without user intervention.

In some embodiments, if the video-viewing precondition is not present,the wrist-wearable device 102 determines (605) whether it iscommunicatively coupled to smart glasses (e.g., smart glasses 150 (FIG.1E) or other head-mounted display). In some embodiments, if thewrist-wearable device 102 is communicatively coupled to smart glasses,the wrist-wearable device 102 causes (607, which occurs after thedetermination at 605—Yes) the presentation of audio data and video dataat the smart glasses as described above in reference to FIG. 1E as well(which descriptions apply equally here in conjunction with this method).For example, when the wrist-wearable device 102 is moved to a loweredposition (such that a position-based video-viewing precondition is nolonger determined to be satisfied, which determination is based onsensor data from the wrist-wearable device), the wrist-wearable device102 causes the smart glasses 150 to present the audio data and videodata. In some embodiments, after causing the smart glasses to presentthe audio data and video data, the method proceeds to operation 608 andcontinues to perform the subsequent operations as shown in method ofFIG. 6 .

If the wrist-wearable device 102 is not communicatively coupled to smartglasses, the wrist-wearable device 102 causes (606, which occurs afterthe determination at 605-No) the presentation of only audio data and notthe video data at the wrist-wearable device. While presenting the audiodata (e.g., the device is operating in the audio-only mode discussedabove), the wrist-wearable device 102 determines whether the video is(608) ongoing (e.g., depending on which type of video is ongoing, thiscan involve checking if a video call is ongoing, whether a videorecording is still playing, whether a video stream is still playing, orwhether other video content is still playing). If the video is notongoing (e.g., determination No at 608), the wrist-wearable device 102returns to operation 602 and waits to receive video data and audio databefore executing the operations of FIG. 6 anew for some other videocontent that is to be presented.

Alternatively, if the video call is determined to be ongoing (e.g.,determination Yes at 608), the wrist-wearable device 102 returns tooperation 604 and determines whether the video-viewing preconditions arepresent. In some embodiments, the wrist-wearable device 102 waits apredetermined time interval (e.g., 5 milliseconds, 10 milliseconds, 15milliseconds, 1 second, 2 seconds, etc.) at operation 610, beforereturning to operation 604. In this way, the wrist-wearable device 102does not continuously drain its battery life collecting sensor dataand/or determining whether the video-viewing preconditions are present.In some embodiments, as was discussed above, the determination as towhether the video-viewing precondition is present is performed aftercertain changes in sensor data are detected (e.g., device moving at acertain speed or with a certain acceleration, which can indicate apositional change of the device 102).

By returning to operation 604, the wrist-wearable device 102 canautomatically switch between different video-presentation modes based onpresence of absence of the video-viewing preconditions as the video callcontinues/is ongoing. As described above, in FIGS. 2-3F, this methoddepicted in FIG. 6 allows the wrist-wearable device 102 to extend itsbattery life, control the maximum temperature of the device, maintain asuitable power requirement, ensure a safe operation for users wearingthe device 102, etc.

Returning to operation 604, if the video-viewing precondition is present(determination Yes at 604), the wrist-wearable device 102 causes (612)the presentation of audio data and video data (e.g., the device 102stays in a video mode, such as that described in reference to FIG. 2 'svideo-call example). In some embodiments, after the audio data and videodata is presented, the method proceeds to operation 608 and continues toperform the operations as described above. While the method of FIG. 6 isshown in simplified form, the skilled artisan, upon reading thisdisclosure, will appreciate that aspects of the method of FIGS. 8A-8Ecan also be performed in conjunction with the operations shown for themethod of FIG. 6 , and will also appreciate that various aspects of themethods of FIGS. 6, 7, 8, 11, and 12 can be performed together atdifferent points in time (or even simultaneously) to allow for seamlesscontrol of various video viewing and capturing techniques.

FIG. 7 illustrates a flow diagram of a method for capturing and,optionally sending, audio and/or video data by a wrist-wearable device102 while capturing a video (which video can be a live video stream,video for a video call, or a locally-recorded video, and the like),according to some embodiments, which method can be performed inconjunction with the method of FIG. 6 (described above, and as shown inFIGS. 6 and 7 the methods are linked by the “B” operation indicatingthat the methods can performed sequentially, but the methods can also beperformed in parallel as well). The method of FIG. 7 includes, capturing(702) video data via an image sensor 135 (e.g., a camera) that isintegrated within a wrist-wearable device 102 and audio data via amicrophone at the wrist-wearable device 102. In some embodiments, thewrist-wearable device 102 includes several image sensors 135 andmicrophones. In some embodiments, the image sensor 135 is centered onthe face of the display 115 and faces away from the user's wrist. Insome embodiment, the speaker is positioned on a bottom portion of thewrist-wearable device 102.

In some embodiments, the wrist-wearable device 102 determines whetherone or more video-capturing preconditions are (704) present. In someembodiments, the video-capturing preconditions include position ororientation of the wrist-wearable device 102, a battery life, maximumtemperature of the device, minimum power requirements (e.g., thewrist-wearable device 102 has excited a low power mode, thewrist-wearable device is connected to a power source, etc.), etc., withexamples and more details having been provided above and also below inreference to the methods of FIGS. 8, 11, and 12 .

If the video-capturing preconditions are present at the wrist-wearabledevice, the wrist-wearable device 102 continues to capture video andaudio data and, optionally, sends (706, which occurs after thedetermination at 704—Yes) the captured video data and the captured audiodata to a device associated with at least one other user (such as forthe example in which the users are participating in a video call, andanother example includes video streaming of video content in which thecaptured video is made available to a number of different usersaccessing the live video stream). The wrist-wearable device 102 alsodetermines whether video capturing is (708) ongoing. If video capturingis not ongoing (e.g., determination No at 708), the wrist-wearabledevice 102 ceases capturing video data and audio data and returns tooperation 702 and waits for capturing of video to occur again beforeexecuting operations of the method shown in FIG. 7 anew.

Alternatively, if video capturing is determined to be ongoing (e.g.,determination Yes at 708), the wrist-wearable device 102 returns tooperation 704 and determines whether the video-capturing preconditionsare present. In some embodiments, the wrist-wearable device 102 waitspredetermined time interval (e.g., 5 milliseconds, 10 milliseconds, 15milliseconds, 1 second, 2 seconds, etc.) at operation 710, beforereturning to operation 704. In this way, the wrist-wearable device 102does not continuously drain its battery life collecting sensor dataand/or determining whether the video-capturing preconditions arepresent. In some embodiments, as was discussed above, the determinationas to whether the video-capturing precondition is present is performedafter certain changes in sensor data are detected (e.g., device movingat a certain speed or with a certain acceleration, which can indicate apositional change of the device 102).

By returning to operation 704, the wrist-wearable device 102 canautomatically determine whether to capture video data and capture audiodata based on presence or absence of the one or more video-capturingpreconditions. As discussed above, the above method of FIG. 7 allows thewrist-wearable device 102 to extend its battery life, control themaximum temperature of the device, maintain a suitable powerrequirement, etc.

Returning to operation 704, in some embodiments, if the video-capturingpreconditions are not present, the wrist-wearable device 102 determines(705) whether it is communicatively coupled to smart glasses (e.g.,smart glasses 150 (FIG. 1E) or other head-mounted display). In someembodiments, if the wrist-wearable device 102 is communicatively coupledto smart glasses, the wrist-wearable device 102 causes (707, whichoccurs after the determination at 705—Yes) the capture of audio dataand/or video data via hardware at the smart glasses rather thansimilar/analogous hardware at the wrist-wearable device. In someembodiments, the wrist-wearable device 102 receives the audio dataand/or video data captured at the smart glasses and transmits thecaptured audio data and/or video data. Alternatively, in someembodiments, the wrist-wearable device 102 causes the smart glasses totransmit the captured audio data and/or video data. In some embodiments,after causing the smart glasses to capture the audio data and videodata, the method proceeds to operation 708 and continues to perform theoperations as described above.

If the wrist-wearable device 102 is not communicatively coupled to smartglasses (determination No at 705), the wrist-wearable device 102 ceasescapturing (712) the video data while still capturing audio data. In someembodiments, following the ceasing (712) of the video data, thewrist-wearable device 102 optionally, e.g., for video calling or videostreaming example, sends (714) only the audio data. By only capturingand sending audio data, the wrist-wearable device 102 can lower itstemperature, extend its battery life, etc. In some embodiments, afteroptionally sending only the audio data, the method proceeds to operation708 and continues to perform the operation as described above.

As is also shown in FIG. 7 , the depicted method is performed inconjunction with the method shown in FIG. 6 . In particular, the “B”step shown at the top of FIG. 7 shows how the method of FIG. 6 canrelate to the method of FIG. 6 (e.g., the method of FIG. 7 can beperformed after the method of FIG. 6 has executed). Alternatively, themethods of FIGS. 6 and 7 can be performed simultaneously, such that thecommon operations (e.g., operation 608 and 708; operations 610 and 710)are only performed once. In certain embodiments in which thevideo-viewing and video-capturing preconditions include the sameplurality of preconditions, then only one method need be performed andthe determination at either operation 604 and 704 would then causeappropriate changes to both presentation and capturing of video and/oraudio data. In embodiments in which there is at least one differentprecondition in the respective pluralities of video-viewing andvideo-capturing preconditions, then have separate determinations 604 and704 helps to ensure that presentation and capturing aspects are handledseparately, thereby enabling a finer level of control over the operationand performance of device 102.

FIGS. 8A-8E illustrate a detailed flow diagram of the method 800 ofvideo calling at a wrist-wearable device 102 (FIGS. 1A-1F), according tosome embodiments. In particular, the method 800 includes presentingaudio and/or video data and/or capturing and sending audio and/or videodata by a wrist-wearable device during a video call. Operations (e.g.,steps) of the method 800 can be performed by one or more processors(e.g., central processing unit 1026 and/or MCU 1052 FIG. 10 ) of awrist-wearable device 102. In some embodiments, the wrist-wearabledevice 102 is coupled with one or more sensors (e.g., various sensorsshown in FIG. 10 , such as a heart rate sensor 1058, EMG sensor 1046,SpO2 sensor 1054, altimeter 1048, thermal sensor or thermal couple,ambient light sensor, ambient noise sensor), a display 115, a speaker,an image sensor 135, and a microphone to perform the one or moreoperations of FIGS. 8A-8E. The speaker can be integrated with thewrist-wearable device 102 or can be associated with a device that isseparate from the wrist-wearable device but is communicatively coupledthereto, such as a pair of headphones, a Bluetooth speaker, or otherlike devices that include speakers for presenting audio data. At leastsome of the operations shown in FIGS. 8A-8E correspond to instructionsstored in a computer memory or computer-readable storage medium (e.g.,storage 1002, ram 1003, and/or memory 1050 FIG. 10 ). Operations 802-838can also be performed in part using one or more processors and/or usinginstructions stored in memory or computer-readable medium of anelectronic device 450 (FIGS. 4A-4C) communicatively coupled to thewrist-wearable device 102 (e.g., a tablet device can perform operations802-838 alone or in conjunction with the one or more processors of thewrist-wearable device 102).

The method 800 includes receiving (802) video data and audio dataassociated with a video call between a user of the wrist-wearable device102 and at least one other user distinct from the user. The method 800also includes, while causing presentation of the video data via thedisplay 115 of the wrist wearable device 102 and the audio data via thespeaker that is in communication with the wrist-wearable device 102,determining (804) whether sensed data from the one or more sensorsindicates that a video-viewing precondition is present at thewrist-wearable device 102. In some embodiments, before video data ispresented via the display 115 of the wrist wearable device 102, themethod 800 determines that the viewing precondition is present at thewrist-wearable device 102.

In some embodiments, the video-viewing precondition is a sensor-basedcondition that must be present at the wrist-wearable device in order forthe wrist-wearable device to present video data for viewing. While thevideo-viewing precondition is present at the wrist-wearable device andwhile the wrist-wearable device is causing presentation of both thevideo data and the audio data, the wrist-wearable device can alsocontinue to receive video data via its own image sensor 135 (e.g.,front-facing camera) and to provide that video data to the at least oneother user. The term video-calling mode (e.g., video mode 206) can beused to describe operating the wrist-wearable device in a mode duringwhich it both receives the video and audio data from a device of the atleast one other user and also captures video and audio data that is sentto the device of the at least one other user (e.g., computing device350; FIG. 10 ).

In some embodiments, the one or more sensors include (806-a) an inertialmeasurement unit (IMU), and the sensed data from the one or more sensorsincludes (806-b) the sensed data from the IMU that allows one or moreprocessors of the wrist-wearable device to determine (e.g., estimate) aposition and orientation of the wrist-wearable device 102 while it isworn on a wrist of the user. The IMU can be a component of the capsuleportion (e.g., capsule portion or watch body 1004 and its IMU 1042, FIG.10 ) and/or a component of the band portion (e.g., band portion 1012 andits IMU 1042, FIG. 10 ) of the wrist-wearable device. Further,determining whether the video-viewing precondition is present at thewrist-wearable device includes (806-c) determining whether the positionand/or orientation of the wrist-wearable device indicates that theuser's wrist is in a raised position or a lowered position, such thatthe video-viewing precondition is not present at the wrist-wearabledevice when the user's wrist is determined to be in the loweredposition.

Some embodiments also make use of a video-capturing precondition, whichas was noted above, can include the same or different preconditionsrelative to the video-viewing precondition. In some embodiments, themethod 800 further includes, while the video call is ongoing and avideo-capturing precondition is present (808-a) at the wrist-wearabledevice 102, capturing (808-b) additional video data and additional audiodata via a camera (e.g., image sensor 135) integrated with thewrist-wearable device 102 and a microphone at the wrist-wearable device102 (i.e., video-capture mode is on 406). The method 800 furtherincludes sending (808-c) the additional video data and the additionaudio data to a device associated with the at least one other userparticipating in the video call. The method 800 further includes inaccordance with a determination that the video-capturing precondition is(808-d) not present at the wrist wearable device 102 (i.e.,video-capture mode is off 260), ceasing (808-e) to capture theadditional video data and sending (808-f) only the audio data to thedevice associated with the at least one other user (e.g., computingdevice 350).

Turning next to additional operations of the method 800 that aredepicted in FIG. 8B, in some embodiments, determining whether thevideo-capturing precondition is present at the wrist-wearable device 102includes determining (810-a) whether the position and/or orientation ofthe wrist-wearable device 102 indicates that the user's wrist is in theraised position or the lowered position. The video-capturingprecondition is (810-b) not present at the wrist-wearable device 102when the user's wrist is determined to be in the lowered position.Alternatively, the video-capturing precondition is (810-c) present atthe wrist-wearable device 102 when the user's wrist is determined to bein the raised position. For example, the wrist-wearable device 102 candetermine, based on the sensor data, that the user's wrist is just belowthe user's waist 105, and thus in a lowered position. The positionand/or orientation of the sensor data can also be used by thewrist-wearable device 102 to determine whether a video-viewingprecondition or a video-capturing precondition is present. For example,the sensor data can indicate that the user's wrist is above the eyelevel of the user, and thus in the raised position.

In some embodiments, when it is determined that the user's wrist is inthe raised position, the video-viewing precondition is satisfied only ifthe user's wrist is (820-a) also positioned such that the display 115 ofthe wrist-wearable device 102 is viewable by the user. The method 800further includes while the user's wrist is in the raised position andthe display is (820-b) viewable by the user, determining (820-c) thatthe video-capturing precondition is present at the wrist-wearable device102 and the video-viewing precondition is not present at thewrist-wearable device 102. Based on the determination (820-c) that thevideo-capturing precondition is present at the wrist-wearable device 102and the video-viewing precondition is not present at the wrist-wearabledevice 102, sending (820-d) the additional video data and the additionalaudio data to the device of the at least one other user and causingpresentation of only the audio data at the speaker that is incommunication with the wrist-wearable device 102.

In some embodiments, while the video is ongoing and the video-capturingprecondition is present at the wrist-wearable device, the method 800includes replacing (812) the user's face in a portion of the additionalvideo data with an avatar representing the user's face. For example,rather than including only live video data captured by the image sensor135 at the wrist-wearable device 102, the additional video data can bemodified to include an avatar in place of the user's face as it wascaptured by the image sensor 135 with the live video data. This can bedone based on a request from a user to do so or can be doneautomatically, without user input, based on determinations made by thewrist-wearable device 102 using additional sensor from the one or moresensors.

In some embodiments, replacing the user's face in the portion of theadditional video data is (814) performed in accordance with adetermination that additional sensor data from the one or more sensorsindicates (based on a determination made by the wrist-wearable device102) that the user's face should be replaced in the portion of theadditional video data.

Turning next to the additional operations of method 800 shown in FIG.8C, in some embodiments, the additional sensor data is (816) obtainedfrom one or more of an ambient noise sensor, an ambient light sensor, alocation sensor, and a biometric sensor. For example, the determinationthat the additional sensor data indicates that the user's face should bereplaced in the portion of the additional video data can be made basedon a current heart rate of the user as measured by a heart-rate sensor(one type of a biometric sensor) exceeding a predefined heart ratethreshold, which can indicate that the user is currently exercising andwould prefer to use an avatar to represent their face in the portion ofthe additional video data, instead of displaying a sweaty or disheveledface. As another example, the determination that the additional sensordata from the one or more sensors indicates that the user's face shouldbe replaced in the portion of the additional video data can be madebased on the lighting of the surrounding room or area measured by anambient light sensor below a predefined brightness threshold, which canindicate that there is not enough lighting such that the user is visiblein the captured video data and would prefer to use an avatar torepresent their face in the portion of the additional video data,instead of displaying a dark screen. In an additional example, the usercan specify locations that they would not like to capture video data(e.g., at work) and based on the additional sensor data (captured by alocation sensor (e.g., GPS)) indicating that the user is at a specifiedlocation, the wrist-wearable device 102 can cease capturing video dataand use an avatar to the user's face in the portion of the additionalvideo data. Additional examples and details regarding the replacement ofportions of video data with an avatar were provided above in referenceto FIGS. 5A-5C, which operations for use of an avatar can also be usedin conjunction with the method 800.

In some embodiments, replacing the user's face in the portion of theadditional video data with an avatar is (818) performed based on aninstruction from the user. For example, as shown in FIGS. 3A-3F, a userinterface element (e.g., video toggle button 320) can be presentedduring the video call that allows the user to provide the instruction toreplace their face with an avatar representing their face by simplyclicking on the user interface element (i.e., disabling the image sensor135 such that the avatar is used instead of the users captured imagedata). Changing back to again include their face instead of the avatarrepresentation can then achieved by clicking on user interface element,which is shown in FIGS. 3A-3F (e.g., video toggle button 320).

In some embodiments, the display 115 being viewable by the user includesthat the display 115 is at a particular viewing angle that allows theuser to see substantially all of the display 115 (e.g., the display 115is positioned at an angle relative the user's eyes, such that when theuser is looking towards the display 115, their eyes can viewsubstantially all of the display 115 at a viewing angle no greater than20 degrees, 30 degrees, or 45 degrees). In this way, use of thevideo-capturing precondition further helps (in addition to use of thevideo-viewing precondition) to ensure that power consumption is managedappropriately to avoid draining the power source and to avoid unsafeheat conditions at the wrist-wearable device.

In some embodiments, only the video-viewing precondition is used and noseparate video-capturing precondition is used, such that thedetermination as to whether to send the local video and audio data fromthe wrist-wearable device can also be tied to the video-viewingprecondition and need not be tied to a separate video-capturingprecondition (e.g., in these embodiments, when the video-viewingprecondition is present, then both video and audio can be sent to theother user's device; and, when the video-viewing precondition is notpresent, then only audio would be sent to the other user's device).

While the primary example provided herein relates to use ofvideo-viewing preconditions to manage power consumption and processorutilization at the wrist-wearable device (e.g., by automatically andwithout user intervention switching between audio and video callingmodes), the use of video-viewing preconditions also applies to othercircumstances in which a wrist-wearable device is presenting a videostream, such as playing a movie, tv show, or other video content (e.g.,examples of this were discussed above in reference to FIGS. 6 and 7 andbelow in reference to FIGS. 11 and 12 ). Thus, the techniques describedherein are not limited to use in conjunction with video calling alonebut are instead applicable to additional circumstances in which videocontent is presented at a wrist-wearable device such that the ability tointelligently switch between displaying video and displaying audio onlyhelps to properly manage power consumption at the wrist-wearable device.

Turning next to the operations of method 800 shown in FIG. 8D, themethod 800 includes in accordance with a determination that thevideo-viewing precondition is not present at the wrist-wearable device102, causing (822) presentation of only the audio data and not the videodata. In some embodiments, the method 800 includes while causing thepresentation of only the audio data and not the video data, determining(824-a) whether sensed data from the one or more sensors indicates thatthe video-viewing precondition is present at the wrist-wearable device102, and in accordance with a determination that the video-viewingprecondition is present at the wrist-wearable device 102, causing(824-b) presentation of both the audio data and the video data. In someembodiments, the determination is conducted automatically and withoutinstructions from the user.

As shown in the flowchart of FIG. 6 (operations of which can beperformed in conjunction with method 800), the method continues tomonitor sensed data from the one or more sensors to continuouslydetermine whether or not the video-viewing precondition is present atthe wrist-wearable device 102 and to then determine whether to either(i) cause presentation of both the video data and the audio data or (ii)cause presentation of only the audio data and not the video data. Insome embodiments, the determinations are continuous. Alternatively, insome embodiments, to further preserve computing resources, thedeterminations are substantially continuous, such that they occur atpredetermined time intervals, such as every 50-100 ms. For example, thewrist-wearable device 102, after it determines that the video-viewingprecondition is not present at the wrist-wearable device 102, switchesto operate in what can be referred to as an audio-calling mode in whichthe wrist-wearable device 102 no longer causes presentation of the videodata and instead only causes presentation of the audio data (in someembodiments, the wrist-wearable device 102 also only captures audio data(and not video data) during the audio-calling mode). Thus, these noveltechniques of dynamically switching between a video-calling mode and anaudio-calling mode ensure (i) that power is not drained at a battery ofthe wrist-wearable device 102 too quickly (in certain instances, even atwo-minute video call can drain a battery of the wrist-wearable device102), (ii) that computing resources are preserved for other processingtasks, and (iii) that the wrist-wearable device 102 does not become toohot such that it causes an injury to the user or damages any of thecomponents of the wrist-wearable device 102.

In some embodiments, the method 800 includes in conjunction with causingpresentation of only the audio data and not the video data, operating(826) the display 115 in a low-power mode in which no video content isdisplayed at the display 115. In some embodiments, the display 115 canalso be turned off even while the wrist-wearable device 102 continues tocause presentation of only the audio data and not the video data.

In some embodiments, the one or more sensors include (828-a) a sensorfor monitoring a temperature at the wrist wearable device, and themethod 800 further includes in accordance with a determination that thetemperature at the wrist-wearable device 102 reaches or exceeds apredefined temperature value, displaying (828-b) on the display 115 ofthe wrist-wearable device 102 a user interface element that provides awarning to the user that the wrist-wearable device 102 needs to cooldown. For example, as shown in FIG. 3A-3F, the wrist-wearable device 102presents a warning message, in which a user is instructed to eitherlower their wrist or manually disable video calling to ensure that thewrist-wearable device 102 is able to cool down. As shown in FIGS. 3A-3F,the user interface element (e.g., 316, 318, 326) that includes thewarning can be displayed as overlaying the video data that is beingpresented on the display 115 of the wrist-wearable device 102. Whilethis one example uses a textual warning to the user, other embodimentscan also use other feedback to provide warnings to a user in conjunctionwith the textual warning or as alternatives thereto (for instance, anaudio warning can be presented, and/or haptic feedback can be provided,etc.).

In some embodiments, the determination that the video-viewingprecondition is not present at the wrist-wearable device is made (830)after displaying the warning to the user and is based in part on thetemperature at the wrist-wearable device having reached or exceeded thepredefined temperature value for a threshold period of time. As anexample, instead of or in addition to using the threshold period of time(that the user has reached or exceeded the predefined temperaturevalue), some embodiments, as described above in reference to FIGS.3A-3B, can also utilize an additional predefined temperature value (thatis greater than the predefined temperature value) to determine that thevideo-viewing precondition is not present.

Turning next to FIG. 8E, in some embodiments, the determination that thetemperature at the wrist-wearable device 102 has exceeded the predefinedtemperature value for the threshold period of time is (832) made while aposition-based video-viewing precondition remains present at thewrist-wearable device 102. In other words, the temperature check canserve as a safety override, such that even if the video-viewingprecondition is present (and therefore would normally allow forcontinued operation in the video-calling mode), that will be overriddenby a determination that conditions at the wrist wearable device are nolonger safe for continued operation in the video-calling mode. In someembodiments, the temperature at the wrist-wearable device 102 is atemperature value that is based on more than one temperature input,including one or more of the following temperature inputs: an ambienttemperature near the wrist-wearable device 102, a temperature of theuser's skin near the wrist-wearable device 102, and a temperature of abattery that is powering the wrist-wearable device 102.

Continuing with the discussion on FIG. 8E, in some embodiments, themethod 800 includes in accordance with a determination that thetemperature at the wrist-wearable device 102 is below the predefinedtemperature value and that the position-based video-viewing preconditionis present at the wrist-wearable device 102, resuming (834) display 115of the video data at the display 115 of the wrist-wearable device 102.

In some embodiments, the method 800 includes detecting (836-a) thatanother electronic device associated with the user is located inproximity to (e.g., within a BLE range of or on the same Wi-Fi networkas) the wrist-wearable device 102. The other electronic device has oneor more of a larger capacity battery than a battery of thewrist-wearable device 102 and a connection to a power source. Inaccordance with a determination that a display of the other electronicdevice is available, the method 800 further includes ceasing (836-b) topresent the video data via the display 115 of the wrist-wearable device102 and providing to the other electronic device data to causepresentation of the video data on the display 115 of the otherelectronic device. Alternatively, in some embodiments, the method 800includes detecting that a heads-up display on the smart glasses (e.g.,smart glasses 150; FIG. 1E) associated with the user is located inproximity to the wrist-wearable device 102, and in accordance with adetermination that a heads-up display on the smart glasses is available,the method 800 further includes ceasing to present the video data viathe display 115 of the wrist-wearable device 102 and providing to theheads-up display on the smart glasses data to cause presentation of thevideo data on the display 115 of the heads-up display on the smartglasses. In some embodiments, the other electronic device (838) is alaptop, a tablet, a smartphone, or a smart display. In this way, bymaking use of display capabilities of nearby devices, as shown anddescribed in FIGS. 4A-4C, the techniques described herein can furtherhelp to reduce power-consumption and temperature levels at thewrist-wearable device 102, thereby helping to avoid draining the batteryof the wrist-wearable device 102, avoid unsafe temperature conditions atthe wrist-wearable device 102, and ensuring longer video calls by makinguse of displays available at nearby devices.

In some embodiments, the method 800 includes in accordance with adetermination that the wrist-wearable device 102 is communicativelycoupled with smart glasses, the speaker that is in communication withthe wrist-wearable device 102 that is used to present the audio data isa speaker coupled with the smart glasses, and in accordance with adetermination that the wrist-wearable device 102 is not communicativelycoupled with smart glasses, the speaker that is in communication withthe wrist-wearable device 102 that is used to present the audio data isa speaker directly coupled with the wrist-wearable device 102.

FIGS. 9A and 9B illustrate an example wrist-wearable device 950, inaccordance with some embodiments. The wrist-wearable device 950 is aninstance of the wearable device 102 described above in reference toFIGS. 1A-8E, such that wearable device 102 should be understood to havethe features of wearable device 950 and vice versa. FIG. 9A illustratesa perspective view of the wrist-wearable device 950 that includes awatch body 954 decoupled from a watch band 962. Watch body 954 and watchband 962 can have a substantially rectangular or circular shape and canbe configured to allow a user to wear the wrist-wearable device 950 on abody part (e.g., a wrist). The wrist-wearable device 950 can include aretaining mechanism 963 (e.g., a buckle, a hook and loop fastener, etc.)for securing watch band 962 to the user's wrist. The wrist-wearabledevice 950 can also include a coupling mechanism 960 (e.g., a cradle)for detachably coupling capsule or watch body 954 (via a couplingsurface 956 of the watch body 954) to watch band 962.

The wrist-wearable device 950 can perform various functions associatedwith ongoing video calls as described above with reference to FIGS.1A-8E and 13A-13D and operations of the methods depicted in FIGS. 11-12and 14 . As will be described in more detail below with reference toFIG. 10 , functions executed by the wrist-wearable device 950 caninclude, without limitation, display of visual content to the user(e.g., visual content displayed on display screen 115), sensing userinput (e.g., sensing a touch on button 958, sensing biometric data onsensor 964, sensing neuromuscular signals on neuromuscular sensor 965,etc.), messaging (e.g., text, speech, video, etc.), image capture,wireless communications (e.g., cellular, near field, Wi-Fi, personalarea network, etc.), location determination, financial transactions,providing haptic feedback, alarms, notifications, biometricauthentication, health monitoring, sleep monitoring, etc. Thesefunctions can be executed independently in watch body 954, independentlyin watch band 962, and/or in communication between watch body 954 andwatch band 962. In some embodiments, functions can be executed on thewrist-wearable device 950 in conjunction with an artificial-realityenvironment which includes, but is not limited to, virtual-reality (VR)environments (including non-immersive, semi-immersive, andfully-immersive VR environments), augmented-reality environments(including marker-based augmented-reality environments, markerlessaugmented-reality environments, location-based augmented-realityenvironments, and projection-based augmented-reality environments),hybrid reality, and other types of mixed-reality environments. As theskilled artisan will appreciate upon reading the descriptions providedherein, the novel wearable devices described herein can be used with anyof these types of artificial-reality environments.

The watch band 962 can be configured to be worn by a user such that aninner surface of the watch band 962 is in contact with the user's skin.When worn by a user, sensor 964 is in contact with the user's skin. Thesensor 964 can be a biosensor that senses a user's heart rate, saturatedoxygen level, temperature, sweat level, muscle intentions, or acombination thereof. The watch band 962 can include multiple sensors 964that can be distributed on an inside and/or an outside surface of thewatch band 962. Additionally, or alternatively, the watch body 954 caninclude the same or different sensors than the watch band 962 (or thewatch band 962 can include no sensors at all in some embodiments). Forexample, multiple sensors can be distributed on an inside and/or anoutside surface of watch body 954. As described below with reference toFIG. 10 , the watch body 954 can include, without limitation,front-facing image sensor 925A and/or rear-facing image sensor 925B(each an instance of image sensor 135; FIGS. 1A-1F), a biometric sensor,an IMU, a heart rate sensor, a saturated oxygen sensor, a neuromuscularsensor(s) (e.g., EMG sensors 1046 FIG. 10 ), an altimeter sensor, atemperature sensor, a bioimpedance sensor, a pedometer sensor, anoptical sensor, a touch sensor, a sweat sensor, etc. The sensor 964 canalso include a sensor that provides data about a user's environmentincluding a user's motion (e.g., an IMU), altitude, location,orientation, gait, or a combination thereof. The sensor 964 can alsoinclude a light sensor (e.g., an infrared light sensor, a visible lightsensor) that is configured to track a position and/or motion of watchbody 954 and/or watch band 962. Watch band 962 can transmit the dataacquired by the sensor 964 to watch body 954 using a wired communicationmethod (e.g., a UART, a USB transceiver, etc.) and/or a wirelesscommunication method (e.g., near field communication, Bluetooth™, etc.).Watch band 962 can be configured to operate (e.g., to collect data usingsensor 964) independent of whether watch body 954 is coupled to ordecoupled from watch band 962.

The watch band 962 and/or watch body 954 can include a haptic device 966(e.g., a vibratory haptic actuator) that is configured to provide hapticfeedback (e.g., a cutaneous and/or kinesthetic sensation, etc.) to theuser's skin. The sensor 964 and/or haptic device 966 can be configuredto operate in conjunction with multiple applications including, withoutlimitation, health monitoring, social media, game playing, andartificial reality (e.g., the applications associated with artificialreality).

In some examples, the watch band 962 can include a neuromuscular sensor965 (e.g., an electromyography (EMG) sensor, a mechanomyogram (MMG)sensor, a sonomyography (SMG) sensor, etc.). Neuromuscular sensor 965can sense a user's intention to perform certain motor actions. Thesensed muscle intention can be used to control certain user interfacesdisplayed on the display 115 of the device 102 and/or can be transmittedto device responsible for rendering an artificial-reality environment(e.g., a head-mounted display) to perform an action in an associatedartificial-reality environment, such as to control the motion of avirtual device displayed to the user.

Signals from neuromuscular sensor 965 can be used to provide a user withan enhanced interaction with a physical object and/or a virtual objectin an artificial-reality application generated by an artificial-realitysystem (e.g., user interface objects presented on the display 115, oranother computing device 650 (e.g., a head-mounted display)). Signalsfrom neuromuscular sensor 965 can be obtained (e.g., sensed andrecorded) by one or more neuromuscular sensors 965 of watch band 962.Although FIG. 9A shows one neuromuscular sensor 965, watch band 962 caninclude a plurality of neuromuscular sensors 965 arrangedcircumferentially on an inside surface of watch band 962 such that theplurality of neuromuscular sensors 965 contact the skin of the user.Watch band 962 can include a plurality of neuromuscular sensors 965arranged circumferentially on an inside surface of watch band 962.Neuromuscular sensor 965 can sense and record neuromuscular signals fromthe user as the user performs muscular activations (e.g., movements,gestures, etc.). The muscular activations performed by the user caninclude static gestures, such as placing the user's hand palm down on atable; dynamic gestures, such as grasping a physical or virtual object;and covert gestures that are imperceptible to another person, such asslightly tensing a joint by co-contracting opposing muscles or usingsub-muscular activations. The muscular activations performed by the usercan include symbolic gestures (e.g., gestures mapped to other gestures,interactions, or commands, for example, based on a gesture vocabularythat specifies the mapping of gestures to commands).

The wrist-wearable device 950 can include a coupling mechanism (alsoreferred to as a cradle) for detachably coupling watch body 954 to watchband 962. A user can detach watch body 954 from watch band 962 in orderto reduce the encumbrance of the wrist-wearable device 950 to the user.The wrist-wearable device 950 can include a coupling surface 956 on thewatch body 954 and/or coupling mechanism(s) 960 (e.g., a cradle, atracker band, a support base, a clasp). A user can perform any type ofmotion to couple watch body 954 to watch band 962 and to decouple watchbody 954 from watch band 962. For example, a user can twist, slide,turn, push, pull, or rotate watch body 954 relative to watch band 962,or a combination thereof, to attach watch body 954 to watch band 962 andto detach watch body 954 from watch band 962.

As shown in the example of FIG. 9A, watch band coupling mechanism 960can include a type of frame or shell that allows watch body 954 couplingsurface 956 to be retained within watch band coupling mechanism 960.Watch body 954 can be detachably coupled to watch band 962 through afriction fit, magnetic coupling, a rotation-based connector, a shear-pincoupler, a retention spring, one or more magnets, a clip, a pin shaft, ahook and loop fastener, or a combination thereof. In some examples,watch body 954 can be decoupled from watch band 962 by actuation ofrelease mechanism 970. The release mechanism 970 can include, withoutlimitation, a button, a knob, a plunger, a handle, a lever, a fastener,a clasp, a dial, a latch, or a combination thereof.

The wrist-wearable device 950 can include a single release mechanism 970or multiple release mechanisms 970 (e.g., two release mechanisms 970positioned on opposing sides of the wrist-wearable device 950 such asspring-loaded buttons). As shown in FIG. 9A, the release mechanism 220can be positioned on watch body 954 and/or watch band coupling mechanism960. Although FIG. 9A shows release mechanism 970 positioned at a cornerof watch body 954 and at a corner of watch band coupling mechanism 960,the release mechanism 970 can be positioned anywhere on watch body 954and/or watch band coupling mechanism 960 that is convenient for a userof wrist-wearable device 950 to actuate. A user of the wrist-wearabledevice 950 can actuate the release mechanism 970 by pushing, turning,lifting, depressing, shifting, or performing other actions on therelease mechanism 970. Actuation of the release mechanism 970 canrelease (e.g., decouple) the watch body 954 from the watch band couplingmechanism 960 and the watch band 962 allowing the user to use the watchbody 954 independently from watch band 962. For example, decoupling thewatch body 954 from the watch band 962 can allow the user to captureimages using rear-facing image sensor 925B.

FIG. 9B is a side view of the wrist-wearable device 950. Thewrist-wearable devices 950 of FIG. 9B can include a watch body interface980 (another example of a cradle for the capsule portion of the device102). The watch body 954 can be detachably coupled to the watch bodyinterface 980. Watch body 954 can be detachably coupled to watch bodyinterface 980 through a friction fit, magnetic coupling, arotation-based connector, a shear-pin coupler, a retention spring, oneor more magnets, a clip, a pin shaft, a hook and loop fastener, or acombination thereof.

In some examples, watch body 954 can be decoupled from watch bodyinterface 980 by actuation of a release mechanism. The release mechanismcan include, without limitation, a button, a knob, a plunger, a handle,a lever, a fastener, a clasp, a dial, a latch, or a combination thereof.In some examples, the wristband system functions can be executedindependently in watch body 954, independently in watch body interface980, and/or in communication between watch body 954 and watch bodyinterface 980. Watch body interface 980 can be configured to operateindependently (e.g., execute functions independently) from watch body954. Additionally, or alternatively, watch body 954 can be configured tooperate independently (e.g., execute functions independently) from watchbody interface 980. As will be described in more detail below withreference to the block diagram of FIG. 10 , watch body interface 980and/or watch body 954 can each include the independent resourcesrequired to independently execute functions. For example, watch bodyinterface 980 and/or watch body 954 can each include a power source(e.g., a battery), a memory, data storage, a processor (e.g., a CPU),communications, a light source, and/or input/output devices.

In this example, watch body interface 980 can include all of theelectronic components of watch band 962. In additional examples, one ormore electronic components can be housed in watch body interface 980 andone or more other electronic components can be housed in portions ofwatch band 962 away from watch body interface 980.

FIGS. 9C and 9D illustrates a portable device 990, in accordance withsome embodiments. The portable device 990 is an instance of the portabledevice 103 described above in reference to FIGS. 1G-1L, such thatportable device 103 should be understood to have the features ofportable device 990 and vice versa. The portable device 990 includessimilar components as the wrist-wearable device 950. For example, theportable device 990 includes a body 954 (e.g., removable or portabledisplay) that can be decoupled from a base 962 (which is similar infunction to the watch band 962). The portable device 990 can include aretaining mechanism 963 for securing the base 962 to the user's wrist.Further, the portable device 990 can also include a coupling mechanism960 (e.g., a cradle) for detachably coupling capsule or body 954 (via acoupling surface 956 of the body 954) to base 962.

The portable device 990 can perform various functions associated withongoing video calls as described above with reference to FIGS. 1A-8E and13A-13D and operations of the methods depicted in FIGS. 11-12 and 14 .The portable device 990 can include, without limitation, display ofvisual content to the user (e.g., visual content displayed on displayscreen 115), sensing user input (e.g., sensing a touch on button 958,sensing biometric data on sensor 964, sensing neuromuscular signals onneuromuscular sensor 965, etc.), messaging (e.g., text, speech, video,etc.), image capture, wireless communications (e.g., cellular, nearfield, Wi-Fi, personal area network, etc.), location determination,financial transactions, providing haptic feedback, alarms,notifications, biometric authentication, health monitoring, sleepmonitoring, etc. The body 954 can include, without limitation,front-facing image sensor 925A and/or rear-facing image sensor 925B(each an instance of image sensor 135; FIGS. 1A-1L). The base 962 and/orbody 954 can include a haptic device 966 (e.g., a vibratory hapticactuator) that is configured to provide haptic feedback (e.g., acutaneous and/or kinesthetic sensation, etc.) to the user. Thesefunctions can be executed independently in body 954, independently inbase 962, and/or in communication between body 954 and base 962. In someembodiments, functions can be executed on the wrist-wearable device 950in conjunction with an artificial-reality environment. As the skilledartisan will appreciate upon reading the descriptions provided herein,the novel wearable devices described herein can be used with any type ofartificial-reality environment.

As shown in the example of FIG. 9D, coupling mechanism 960 can include atype of frame or shell that allows body 954 coupling surface 956 to beretained within body coupling mechanism 960. Body 954 can be detachablycoupled to base 962 through a friction fit, magnetic coupling, arotation-based connector, a shear-pin coupler, a retention spring, oneor more magnets, a clip, a pin shaft, a hook and loop fastener, or acombination thereof. In some examples, body 954 can be decoupled frombase 962 by actuation of release mechanism 970. The release mechanism970 can include, without limitation, a button, a knob, a plunger, ahandle, a lever, a fastener, a clasp, a dial, a latch, or a combinationthereof.

The device 950 can include a single release mechanism 970 or multiplerelease mechanisms 970 (e.g., two release mechanisms 970 positioned onopposing sides of the wrist-wearable device 950 such as spring-loadedbuttons). As shown in FIG. 9C, the release mechanism 220 can bepositioned on body 954 and/or body coupling mechanism 960. Although FIG.9C shows release mechanism 970 positioned at a corner of body 962, therelease mechanism 970 can be positioned anywhere that is convenient fora user of the portable device 990 to actuate.

FIG. 9D is a view of the portable device 990 with a decoupled watch body954. The portable device 990 of FIG. 9C can include a body interface980. The body 954 can be detachably coupled to the body interface 980.Body 954 can be detachably coupled to body interface 980 through afriction fit, magnetic coupling, a rotation-based connector, a shear-pincoupler, a retention spring, one or more magnets, a clip, a pin shaft, ahook and loop fastener, or a combination thereof. In some examples, body954 can be decoupled from body interface 980 by actuation of a releasemechanism 970.

In some examples, the system functions can be executed independently inbody 954, independently in body interface 980, and/or in communicationbetween body 954 and body interface 980. Body interface 980 can beconfigured to operate independently (e.g., execute functionsindependently) from body 954. Additionally, or alternatively, body 954can be configured to operate independently (e.g., execute functionsindependently) from body interface 980. As will be described in moredetail below with reference to the block diagram of FIG. 10 , bodyinterface 980 and/or body 954 can each include the independent resourcesrequired to independently execute functions. For example, body interface980 and/or body 954 can each include a power source (e.g., a battery), amemory, data storage, a processor (e.g., a CPU), communications, a lightsource, and/or input/output devices.

FIG. 10 is a block diagram of a wrist-wearable device system 1000,according to at least one embodiment of the present disclosure. Thewrist-wearable device 102 described in detail above is an examplewrist-wearable device system 1000, so wrist-wearable device 102 will beunderstood to include the components shown and described for system 1000below. In some embodiments, the portable device 103 described above inreference to FIGS. 1G-1L, 9C, and 9D includes one or more componentsshown and described for system 1000 below. The wrist-wearable devicesystem 1000 can have a split architecture (e.g., a split mechanicalarchitecture, a split electrical architecture) between a body 1004(e.g., a capsule or watch body 954) and a watch band 1012 (e.g., a bandportion or watch band 962), which was described above in reference toFIGS. 9A-9D. Each of watch body 1004 and watch band 1012 can have apower source, a processor, a memory, sensors, a charging device, and acommunications device that enables each of watch body 1004 and watchband 1012 to execute computing, controlling, communication, and sensingfunctions independently in watch body 1004, independently in watch band1012, and/or in communication between watch body 1004 and watch band1012.

For example, watch body 1004 can include battery 1028, CPU 1026, storage1002, heart rate sensor 1058, EMG sensor 1046, SpO2 sensor 1054,altimeter 1048, INIU 1042, random access memory 1003, charging input1030 and communication devices NFC 1015, LTE 1018, and Wi-Fi/Bluetooth™1020. Similarly, watch band 1012 can include battery 1038,microcontroller unit 1052, memory 1050, heart rate sensor 1058, EMGsensor 1046, SpO2 sensor 1054, altimeter 1048, IMU 1042, charging input1034 and wireless transceiver 1040. In some examples, a level offunctionality of at least one of watch band 1012 or watch body 1004 canbe modified when watch body 1004 is detached from watch band 1012. Thelevel of functionality that can be modified can include thefunctionality of at least one sensor (e.g., heart rate sensor 1058, EMGsensor 1046, etc.). Each of watch body 1004 and watch band 1012 canexecute instructions stored in storage 1002 and memory 1050 respectivelythat enables at least one sensor (e.g., heart rate sensor 1058, EMGsensor 1046, etc.) in watch band 1012 to acquire data when watch band1012 is detached from watch body 1004 and when watch band 1012 isattached to watch body 1004.

Watch body 1004 and watch band 1012 can further execute instructionsstored in storage 1002 and memory 1050 respectively that enables watchband 1012 to transmit the acquired data to watch body 1004 (or othercomputing device such as a head mounted display or other computingdevice 350; FIG. 3 ) using wired communications 1027 and/or wirelesstransceiver 1040. For example, watch body 1004 can display visualcontent to a user on touchscreen display 1013 (e.g., an instance ofdisplay 115) and play audio content on speaker. Watch body 1004 canreceive user inputs such as audio input from microphone and touch inputfrom buttons 1024. Watch body 1004 can also receive inputs associatedwith a user's location and/or surroundings. For example, watch body 1004can receive location information from GPS 1016 and/or altimeter 1048 ofwatch band 1012.

Watch body 1004 can receive image data from at least one image sensor135 (e.g., a camera). Image sensor 135 can include front-facing imagesensor 925A (FIG. 9A) and/or rear-facing image sensor 925B (FIG. 9B).Front-facing image sensor 925A and/or rear-facing image sensor 925B cancapture wide-angle images of the area surrounding front-facing imagesensor 925A and/or rear-facing image sensor 925B such as hemisphericalimages (e.g., at least hemispherical, substantially spherical, etc.),180-degree images, 360-degree area images, panoramic images, ultra-widearea images, or a combination thereof. In some examples, front-facingimage sensor 925A and/or rear-facing image sensor 925B can be configuredto capture images having a range between 45 degrees and 360 degrees.Certain input information received by watch body 1004 (e.g., userinputs, etc.) can be communicated to watch band 1012. Similarly, certaininput information (e.g., acquired sensor data, neuromuscular sensordata, etc.) received by watch band 1012 can be communicated to watchbody 1004.

Watch body 1004 and watch band 1012 can receive a charge using a varietyof techniques. In some embodiments, watch body 1004 and watch band 1012can use a wired charging assembly (e.g., power cords) to receive thecharge. Alternatively, or in addition, watch body 1004 and/or watch band1012 can be configured for wireless charging. For example, a portablecharging device can be designed to mate with a portion of watch body1004 and/or watch band 1012 and wirelessly deliver usable power to abattery of watch body 1004 and/or watch band 1012.

Watch body 1004 and watch band 1012 can have independent power andcharging sources to enable each to operate independently. Watch body1004 and watch band 1012 can also share power (e.g., one can charge theother) via power management IC 1032 in watch body 1004 and powermanagement IC 1036 in watch band 1012. Power management IC 1032 andpower management IC 1036 can share power over power and groundconductors and/or over wireless charging antennas.

Wrist-wearable device system 1000 can operate in conjunction with ahealth monitoring application that acquires biometric and activityinformation associated with the user. The health monitoring applicationcan be designed to provide information to a user that is related to theuser's health. For example, wrist-wearable device system 1000 canmonitor a user's physical activity by acquiring data from IMU 1042 whilesimultaneously monitoring the user's heart rate via heart rate sensor1058 and saturated blood oxygen levels via SpO2 sensor 1054. CPU 1026can process the acquired data and display health related information tothe user on touchscreen display 1013.

Wrist-wearable device system 1000 can detect when watch body 1004 andwatch band 1012 are connected to one another (e.g., mechanicallyconnected and/or electrically or magnetically connected) or detachedfrom one another. For example, pin(s) 505, power/ground connections1060, wireless transceiver 1040, and/or wired communications 1027, candetect whether watch body 1004 and watch band 1012 are mechanicallyand/or electrically or magnetically connected to one another (e.g.,detecting a disconnect between the one or more electrical contacts ofpower/ground connections 1060 and/or wired communications 1027). In someexamples, when watch body 1004 and watch band 1012 are mechanicallyand/or electrically disconnected from one another (e.g., watch body 1012has been detached from watch band 1012 as described with reference toFIGS. 9A-9C), watch body 1004 and/or watch band 1012 can operate withmodified level of functionality (e.g., reduced functionality) ascompared to when watch body 1004 and watch band 1012 are mechanicallyand/or electrically connected to one another. The modified level offunctionality (e.g., switching from full functionality to reducedfunctionality and from reduced functionality to full functionality) canoccur automatically (e.g., without user intervention) whenwrist-wearable device system 1000 determines that watch body 1004 andwatch band 1012 are mechanically and/or electrically disconnected fromone another and connected to each other, respectively.

Modifying the level of functionality (e.g., reducing the functionalityin watch body 1004 and/or watch band 1012) can reduce power consumptionin battery 1028 and/or battery 1038. For example, any of the sensors(e.g., heart rate sensor 1058, EMG sensor 1046, SpO2 sensor 1054,altimeter 1048, etc.), processors (e.g., CPU 1026, microcontroller unit1052, etc.), communications elements (e.g., NFC 1015, GPS 1016, LTE1018, Wi-Fi/Bluetooth™ 1020, etc.), or actuators (e.g., haptics 1022,1049, etc.) can reduce functionality and/or power consumption (e.g.,enter a sleep mode) when watch body 1004 and watch band 1012 aremechanically and/or electrically disconnected from one another. Watchbody 1004 and watch band 1012 can return to full functionality whenwatch body 1004 and watch band 1012 are mechanically and/or electricallyconnected to one another. The level of functionality of each of thesensors, processors, actuators, and memory can be independentlycontrolled.

As described above, wrist-wearable device system 1000 can detect whenwatch body 1004 and watch band 1012 are coupled to one another (e.g.,mechanically connected and/or electrically connected) or decoupled fromone another. In some examples, watch body 1004 can modify a level offunctionality (e.g., activate and/or deactivate certain functions) basedon whether watch body 1004 is coupled to watch band 1012. For example,CPU 1026 can execute instructions that detect when watch body 1004 andwatch band 1012 are coupled to one another and activate front-facingimage sensor 925A. CPU 1026 can activate front-facing image sensor 925Abased on receiving user input (e.g., a user touch input from touchscreendisplay 1013, a user voice command from microphone, a user gesturerecognition input from EMG sensor 1046, etc.).

When CPU 1026 detects that watch body 1004 and watch band 1012 aredecoupled from one another, CPU 1026 can modify a level of functionality(e.g., activate and/or deactivate additional functions). For example,CPU 1026 can detect when watch body 1004 and watch band 1012 aredecoupled from one another and activate rear-facing image sensor 925B.CPU 1026 can activate rear-facing image sensor 925B automatically (e.g.,without user input) and/or based on receiving user input (e.g., a touchinput, a voice input, an intention detection, etc.). Automaticallyactivating rear-facing image sensor 925B can allow a user to takewide-angle images without having to provide user input to activaterear-facing image sensor 925B.

In some examples, rear-facing image can be activated based on an imagecapture criterion (e.g., an image quality, an image resolution, etc.).For example, rear-facing image sensor 925B can receive an image (e.g., atest image). CPU 1026 and/or rear-facing image sensor 925B can analyzethe received test image data and determine whether the test image datasatisfies the image capture criterion (e.g., the image quality exceeds athreshold, the image resolution exceeds a threshold, etc.). Rear-facingimage sensor 925B can be activated when the test image data satisfiesthe image capture criterion. Additionally, or alternatively, rear-facingimage sensor 925B can be deactivated when the test image data fails tosatisfy the image capture criterion.

In some examples, CPU 1026 can detect when watch body 1004 is coupled towatch band 1012 and deactivate rear-facing image sensor 925B. CPU 1026can deactivate rear-facing image sensor 925B automatically (e.g.,without user input) and/or based on receiving user input (e.g., a touchinput, a voice input, an intention detection, etc.). Deactivatingrear-facing image sensor 925B can automatically (e.g., without userinput) reduce the power consumption of watch body 1004 and increase thebattery charge time in watch body 1004. In some examples, wrist-wearabledevice system 1000 can include a coupling sensor 1007 that senseswhether watch body 1004 is coupled to or decoupled from watch band 1012.Coupling sensor 1007 can be included in any of watch body 1004, watchband 1012, or watch band coupling mechanism 960 of FIGS. 9A-9C. Couplingsensor 1007 (e.g., a proximity sensor) can include, without limitation,an inductive proximity sensor, a limit switch, an optical proximitysensor, a capacitive proximity sensor, a magnetic proximity sensor, anultrasonic proximity sensor, or a combination thereof. CPU 1026 candetect when watch body 1004 is coupled to watch band 1012 or decoupledfrom watch band 1012 by reading the status of coupling sensor 1007.

FIG. 11 illustrates a detailed flow diagram of a method 1100 ofdetermining when to cease capturing video via a head-worn wearabledevice 150 based on sensor data at the head-worn wearable device 150and/or at a wrist-wearable device 102 (FIGS. 1A-1F), according to someembodiments. Operations (e.g., steps) of the method 1100 can beperformed by one or more processors (e.g., central processing unit 1026and/or MCU 1052 FIG. 10 ) of a wrist-wearable device 102 and/or one ormore processors of a head-worn wearable device 150. As described abovein reference to FIGS. 1A-1F and FIGS. 9A-10 , in some embodiments, thewrist-wearable device 102 and/or the head-worn wearable device 150include one or more sensors, a display, a speaker, an image sensor, anda microphone to perform the one or more operations described below inreference to the method of FIG. 11 . A speaker can be integrated withthe wrist-wearable device 102 and/or head-worn wearable device 150. Aspeaker, microphone, display, one or more sensors, and image sensor (orother imaging device) of the head-worn wearable device 150 can beassociated with the wrist-wearable device 102 (e.g., via communicationbetween the wrist-wearable device 102 and the head-worn wearable device150). At least some of the operations shown in FIG. 11 correspond toinstructions stored in a computer memory or computer-readable storagemedium (e.g., storage 1002, ram 1003, and/or memory 1050 FIG. 10 ). Theexample of operations 1110-1130 (and the operations following operation1130) is (are) performed using one or more processors and/or usinginstructions stored in memory or computer-readable medium of thehead-worn wearable device 150.

The method 1100 includes capturing (1110), via the head-worn wearabledevice 150 that includes a camera, video data. The method 1100 includes,while capturing the video data, monitoring (1120) sensor data (e.g.,data from inertial measurement units, data from capacitive sensors, datafor proximity sensors, and other sensor data) indicating one or both ofa position of the head-worn wearable device 150 and a position of awrist-wearable device 102 that is communicatively coupled with thehead-worn device 150 to determine when to cease capturing the videodata. In one example, the video data is a point-of-view video beingcaptured via the camera of the head-worn wearable device for eventualupload and sharing via a social-media platform. The method 1100 furtherincludes in accordance with a determination that at least some of thesensor data indicates that one or both of a video-capturing preconditionis not present at the head-worn wearable device and a video-viewingprecondition is present at the wrist-wearable device, ceasing (1130) tocapture the video data and causing the video data to be displayed on adisplay of the wrist-wearable device. Examples of capturing data via thehead-worn wearable device 150 and/or the wrist-wearable device 102 areprovided above in reference to FIGS. 1A-1F and FIGS. 6-7 . And moredetails regarding the video-viewing and video-capturing preconditionswere also provided above and are applicable here as well.

In some embodiments, the determination is based only on at least some ofthe sensor data indicating that the video-capturing precondition is notpresent at the head-worn wearable device 150. In some embodiments, thevideo-capturing precondition is not present at the head-worn wearabledevice 150 when at least some of the sensor data indicates that thehead-worn wearable device 150 is positioned such that a front portion ofthe head-worn wearable device 150 is facing towards the ground (e.g.,the sensor data indicates that a user's head is facing towards theground, such that the front portion of the head-worn wearable device isalso positioned facing towards the ground since it is worn on the user'sface). In some embodiments, the front portion of the head-worn wearabledevice 150 is a portion of the head-worn wearable device 150 that isworn over a user's eyes (e.g., the front portion can include the lensesof a head-worn wearable device, such as when the head-worn wearabledevice is pair of smart glasses).

In some embodiments, the determination can also be based only on sensordata from the wrist-wearable device, instead of sensor data from thehead-worn wearable device. For example, in some embodiments, thedetermination is based only on at least some of the sensor dataindicating that the video-viewing precondition is present wrist-wearabledevice 102. In some embodiments, the video-viewing precondition ispresent at the wrist-wearable device 102 when the wrist-wearable device102 is in a raised position.

In some embodiments, the determination can further be based on sensordata from both the wrist-wearable device and sensor data from thehead-worn wearable device. For example, in some embodiments, thedetermination is based on at least some of the sensor data indicatingboth the video-capturing precondition is not present at the head-wornwearable device 150 and the video-viewing precondition is present at thewrist-wearable device 102. Additional examples of the video-capturingpreconditions and the video-viewing preconditions are provided above inreference to FIGS. 1A-3F and FIGS. 6-8E, and these examples can be usedwith the method 1100 as well.

FIG. 12 illustrates a detailed flow diagram of a method of a coordinatedvideo capturing technique for a head-worn wearable device and awrist-wearable device (e.g., creating coordinated video using video datacaptured by a camera of the wrist-wearable device and by a camera of thewrist-wearable device), according to some embodiments. Operations inFIG. 12 (e.g., steps) of the method 1200 can be performed by one or moreprocessors (e.g., central processing unit 1026 and/or MCU 1052 FIG. 10 )of a wrist-wearable device 102 and/or one or more processors of ahead-worn wearable device 150. As described above in reference to FIGS.1A-1F and FIGS. 9A-10 , in some embodiments, the wrist-wearable device102 and/or the head-worn wearable device 150 include one or moresensors, a display, a speaker, an image sensor, and a microphone toperform the one or more operations described below in reference to themethod of FIG. 12 . A speaker can be integrated with the wrist-wearabledevice 102 and/or head-worn wearable device 150. A speaker, microphone,display, one or more sensors, and image sensor (or other imaging device)of the head-worn wearable device 150 can be associated with thewrist-wearable device 102 (e.g., via communication between thewrist-wearable device 102 and the head-worn wearable device 150). Atleast some of the operations shown in FIG. 12 correspond to instructionsstored in a computer memory or computer-readable storage medium (e.g.,storage 1002, ram 1003, and/or memory 1050 FIG. 10 ). The example ofoperations 1210-1230 (and the other operations described followingoperation 1230) is performed using one or more processors and/or usinginstructions stored in memory or computer-readable medium of thehead-worn wearable device 150.

Method 1200 is now described below. Method 1200 is a method ofcoordinated video capturing using a wrist-wearable device and ahead-worn wearable device. At operation 1210, the method includescapturing, via a head-worn wearable device that includes a camera, firstvideo data.

The method also includes, at operation 1220 (FIG. 12 ), while capturingthe first video data, monitoring sensor data indicating one or both of(i) a position of the head-worn wearable device and (ii) a position of awrist-wearable device that is communicatively coupled with the head-worndevice to determine when to cease capturing the first video data via thehead-worn wearable device.

The method further includes, at operation 1230, in accordance with adetermination that at least some of the sensor data indicates that oneor both of (i) a video-capturing precondition is not present at thehead-worn wearable device and (ii) a video-capturing precondition ispresent at the wrist-wearable device, ceasing to capture the first videodata and beginning to capture second video data via a camera of thewrist-wearable device.

In some embodiments, in response to receiving a request from a user toceasing capturing the second video data, the method can include causingthe first video data and the second video data to be combined intocoordinated video data. In some embodiments, the method can includecausing the coordinated video data to be displayed on a display of thewrist-wearable device. In some embodiments, the determination ofoperation 1230 is based only on at least some of the sensor dataindicating that the video-capturing precondition is not present at thehead-worn wearable device. In some embodiments, the video-capturingprecondition is not present at the head-worn wearable device when atleast some of the sensor data indicates that the head-worn wearabledevice is positioned such that a front portion of the head-worn wearabledevice is facing towards the ground. In some embodiments, the frontportion of the head-worn wearable device is a portion of the head-wornwearable device that is worn over a user's eyes.

In some embodiments, the determination of operation 1230 is based onlyon at least some of the sensor data indicating that the video-capturingprecondition is present at the wrist-wearable device. In someembodiments, the video-capturing precondition is present at thewrist-wearable device when the wrist-wearable device is in a raisedposition. In some embodiments, the determination at operation 1230 isbased on at least some of the sensor data indicating both (i) thevideo-capturing precondition is not present at the head-worn wearabledevice and (ii) the video-capturing precondition is present at thewrist-wearable device. In some embodiments, the method additionallyincludes, while the second video data is being captured, monitoringsensor data indicating one or both of (i) a position of the head-wornwearable device and (ii) a position of a wrist-wearable device that iscommunicatively coupled with the head-worn device to determine when tocease capturing the second video data at the wrist-wearable device. Inaccordance with an additional determination that at least some of thesensor data indicates that one or both of (i) the video-capturingprecondition is present at the head-worn wearable device and (ii) thevideo-capturing precondition is not present at the wrist-wearabledevice, the method includes ceasing to capture the second video data andbeginning to capture third video data via the camera of the head-worndevice.

In some embodiments, the method includes, in response to receiving arequest from a user to cease capturing the third video data, causing thefirst video data, the second video data, and the third video data to becombined into coordinated video data. In some embodiments, the methodalso includes causing the coordinated video data to be displayed on adisplay of the wrist-wearable device.

In one other embodiment of method 1200, instead of using thevideo-capturing preconditions to determine when to switch betweencapturing at the camera of the head-worn wearable device and/or thewrist-wearable device (e.g., operations 1220 and 1230 do not occur),this one other embodiment of method 1200 instead includes, beforestarting to capture the first video data via head-worn wearable deviceat operation 1210, a user first making a request to initiate a videostream via an input provided at a display of the wrist-wearable device.In response to the request to initiate the video stream and inaccordance with a determination that the wrist-wearable device iscommunicatively coupled with the head-worn wearable device, the cameraof the head-worn wearable device is activated to begin capturing thefirst video data as part of the video stream. Alternatively oradditionally, in some embodiments, a determination to capture the firstvideo data (e.g., video stream, or live stream discussed below inreference to FIGS. 13A-13D) via head-worn wearable device and/or thewrist-wearable device is based on one or more capture triggers beingsatisfied (where satisfaction of the capture triggers can be determinedwithout requiring any user input). The capture triggers can includelocation-based triggers (e.g., the user entered a geofenced area, theuser reached a landmark, etc.), biometric-sensor-data triggers (e.g.,the user reached a target heart rate, a target VO2 max, etc.),physical-activity triggers (e.g., the user reached a target velocity, atarget distance, a target altitude, etc.), image-recognition triggers(e.g., without capturing an image, detecting by performing imagerecognition on a field of view of an imaging device, landmarks, events(e.g., parades, concerts, etc.), people (e.g., celebrities, family,friends, etc.), etc.), time-based triggers (e.g., start capturing videodata at noon, at sunset, between 2 and 5 PM, etc.), and/or othertriggers.

The capture triggers can be defined and/or selected for use by the userto ensure that only those triggers that the user actively selects areused at any point in time (e.g., the user must opt-in, in theseembodiments, to being using any of the various types of capture triggersdiscussed above).

While the camera of the head-worn wearable device is used for this videostreaming, sensor data at the wrist-wearable device is monitored todetermine whether the wrist-wearable device is in a raised position and,if it is determined that the sensor data (e.g., data from an IMU orother sensor data, which can also be sensor data from the head-wornwearable device that indicates that the user's head is looking downtowards the ground) indicates that the wrist-wearable device is in araised position, then the display of the wrist-wearable device is causedto present a live view of reactions to the ongoing video stream (e.g.,an example user interface showing the live view of reactions ispresented at the display of the wrist-wearable device in FIG. 13D). Thislive view of reactions (displayed on the display of the wrist-wearabledevice once it is determined to be in the raised position) can includetextual content (e.g., textual messages commenting on the video streamfrom other users) and can also include graphical content (e.g., variousemojis, emoticons, and/or emotes from other users), and the live view ofreactions can be received from a social-networking platform (e.g.,Facebook) that is hosting the video/live stream. As an alternative,rather than monitoring the sensor data to determine when to display thelive view of reactions, the display of the wrist-wearable device (aspart of this alternative option) can be configured to always present thelive view of reactions while the video stream is ongoing and will onlycease displaying the live view of reactions once the video streaming isceased. Accordingly, in these embodiments, a user can capture firstvideo data using the head-worn wearable device and interact with a livechat using the display of the wrist-wearable device, thereby furtheringa sustained user interaction with both wearable devices, while alsoimproving the man-machine interfaces at both devices.

In addition, in some embodiments, the wrist-wearable device 102 and/orthe head-worn wearable device 150 include a built-in user-controlledpersonal assistant. In some embodiments, the built-in user-controlledpersonal assistant is configured to read out (e.g., text-to-speech)reactions received while the video/live stream is ongoing. For example,if the user receives a message stating “oh that's cool!” the personalassistant can covey to the user, via speakers of the wrist-wearabledevice 102 or the head-worn wearable device 150, “oh that's cool!”; or,the personal assistant can instruct the user to look at the display oftheir wrist-wearable device to view reactions (e.g., indicating “messagereceived from User X, take a look at your watch screen”). Similarly, ifthe user receives graphical content (e.g., a smiling emoticon or emoji),the personal assistant can convey to the user, via speakers of thewrist-wearable device 102 or the head-worn wearable device 150, themeaning of the graphical content (e.g., “smile” for the smilingemoticon, and can also indicate a name of the contact that sent thegraphical content). To further the sustained interactions and improvedman-machine interfaces, in conjunction with providing the audiblefeedback, the wrist-wearable device can optionally be configured to alsovibrate as reactions are received (e.g., to provide a haptic response,which haptic response can use predetermined vibration patterns that canbe associated with particular contacts to allow the user to quickly andeasily know, based on the vibration pattern, which contact is commentingor reacting to their ongoing livestream).

The personal assistant can be controlled by the user via touch inputs(e.g., at a display of the wrist-wearable device 102 or the frames ofthe head-worn wearable device 150), voice commands, gestures (e.g.,gestures performed or intended to be performed by user that arerecognized by the wrist-wearable device, gestures detected by processingone or more images capturable in a field of view of the wrist-wearabledevice and/or head-worn wearable device, sequence of inputs (e.g.,single tap, double tap, pattern of taps at a display of thewrist-wearable device 102 or the frames of the head-worn wearable device150), type of input (e.g., finger slide or long presses detected at adisplay of the wrist-wearable device 102 or the frames of the head-wornwearable device 150), etc.

FIGS. 13A-13D illustrate coordinated video streaming and messaging usinga wrist-wearable device and a head-worn wearable device, in accordancewith some embodiments. The wrist-wearable device 102 and the head-wornwearable device (e.g., smart glasses 150) include one or more componentsdescribed above in reference to FIGS. 1A-12 . For example, in someembodiments, the smart glasses 150 include one or more of speakers, amicrophone, an imaging device 169 (e.g., a camera or other type of imagesensor) and/or a display 155 (e.g., a heads-up display integrated withone or both of the lenses of the smart glasses) for presenting visualdata to a user 130; and the wrist-wearable device 102 includes one ormore of a display 115, a speaker, a microphone, and/or an image sensor135 (e.g., a camera). In some embodiments, the wrist-wearable device 102and/or the smart glasses 150 include one or more sensors (e.g., sensorsa heart rate sensor 1058 (FIG. 10 ), EMG sensor 1046, SpO2 sensor 1054,altimeter 1048, thermal sensor or thermal couple, ambient light sensor,ambient noise sensor, accelerometers, gyroscope sensors, positionalsensors (e.g., Hall effect sensor, ultrasonic sensor, etc.), and/orother sensors described herein). In some embodiments, the wrist-wearabledevice 102 is communicatively coupled to another computing device, suchas the smart glasses 150, as described above in reference to FIGS.1E-1F.

In FIG. 13A, a user 130 provides instructions to use an imaging device169 of the head-worn wearable device 150 to capture video data for avideo stream. In some embodiments, the instructions are received at thewrist-wearable device 102. For example, the wrist-wearable device 102can display, via display 115, a user interface including one or morevideo-streaming applications (e.g., a first video-streaming application1301 and a second video-streaming application 1303), that when selectedby the user 130 (represented by user input 1304) cause an instruction tobe sent to a head-worn wearable device to use an imaging device 169 ofthe head-worn wearable device 150 to capture video data for a videostream. Alternatively or in addition to a user-provided instruction orinput, as described above in reference to FIG. 12 , in some embodiments,a determination to capture video data for the video stream can be basedon one or more capture triggers being satisfied (examples and use casesfor the capture triggers were provided above and are not repeated herefor the sake of brevity).

In some embodiments, the user can adjust one or more capture settingsvia the wrist-wearable device 102. For example, the user can select aframe rate at which to capture the video, select a capture mode, and/orother capture conditions.

In some embodiments, a video stream is a real-time video and/or audiocapture and transmission (which can be referred to as a live stream)that is shared for viewing with users of other devices (e.g., withfriends that are invited to view the live stream). In some embodiments,in conjunction with capturing the video stream, one or more electronicmessages can be received from the users of other devices that areviewing the live stream. In some embodiments, the user input 1305 toinitiate the video stream/live stream is received via the wrist-wearabledevice 102 (e.g., via a touch command at a display 115 and/or actuationof a button, as shown in the example of FIG. 13A). In some embodiments,the video stream is initiated via a voice command and/or one or moregestures (e.g., hand gestures). As previously mentioned, alternative oradditional options for initiating the video stream can occur without anyinput from the user, such as by using a capture trigger associated withthe user 130 having entered a geofenced area that has a predeterminedassociation with initiating a video stream (e.g., the user 130 canopt-in to establish a capture trigger associated with an area of GPScoordinates around the Golden Gate bridge, such that once the user 130is determined to be within those GPS coordinates (i.e., the capturetrigger is satisfied), then an imaging device of the head-worn wearabledevice and/or the wrist-wearable device can initiate capturing of thevideo stream and can make that stream available to a predetermined groupof users (e.g., to subscribers of a group of bridge lovers).

Alternatively or in addition, in some embodiments, as shown in FIG. 13B,the user 130 provides an input 1305 at the head-worn wearable device 150(e.g., a tap input at a frame portion of the head-worn wearable device15) that initiates a video stream and/or adjusts one or more capturesettings.

Turning next to FIG. 13C, in some embodiments, responsive to receivingthe user input 1304 (FIG. 13A) or 1305 (FIG. 13B), the smart glasses 150capture, via the imaging device 169, video data. In some embodiments,the imaging device 169 is configured to capture a field of view of theimaging device of the smart glasses 150 (e.g., imaging device 169). Insome embodiments, the smart glasses 150 (and/or the wrist-wearabledevice 102) simultaneously capture audio data using one or moremicrophones (e.g., a microphone included in the smart glasses 150 and/orthe wrist-wearable device 102). The captured video data and/or audiodata is transmitted, in real-time, to one or more computing devices(e.g., a sever, a tablet, a computer, a smartphone, etc.) using anetwork 360 (FIG. 3 ). In some embodiments, the smart glasses 150, thewrist-wearable device 102, or a combination of the two transmits thecaptured video data and/or audio data. In some embodiments, anotherelectronic device (e.g., a tablet, a computer, a smartphone, etc.)communicatively coupled to the smart glasses 150, the wrist-wearabledevice 102, or both transmits the captured video data and/or audio data(e.g., a smartphone can be used as a communication intermediary and canreceive video and/or audio data from the head-worn wearable deviceand/or the wrist-wearable device, can process or otherwise combine thatdata, and can then send the processed or combined data to a server thatthen makes the video stream available to the viewers of the video/livestream).

In some embodiments, one or more electronic messages are received, viathe network 360, while the video data and/or audio data is captured andtransmitted (e.g., while the live stream is ongoing, viewers of the livestream can react to the live stream, which reactions are then availablefor view by the remaining views of the live stream as well as by theuser 130 that is facilitating the live stream). More specifically, theone or more electronic messages are received from a viewer of the videoand/or stream. In some embodiments, the one or more electronic messagesare received by the smart glasses 150, the wrist-wearable device 102, ora combination of the two (or at an electronic device functioning as anintermediary, such as a smartphone that can be coupled with one or bothof the wrist-wearable device and the head-worn wearable device). The oneor more electronic messages, when received by the smart glasses 150, thewrist-wearable device 102, or a combination of the two, are responsiveto the captured video data for the video and/or audio stream (e.g., theone or more messages include real-time responses and/or reactions to thetransmitted video and/or audio data). In some embodiments, the one ormore electronic messages are displayed to the user in the order they arereceived (e.g., are displayed in a chronological order). In someembodiments, the one or more electronic messages are synchronized viathe smart glasses 150, the wrist-wearable device 102, or a combinationof the two such that one or more electronic messages are provided to theuser 130 in the order received. Alternatively or additionally, in someembodiments, the one or more electronic messages are synchronized viaone or more computing devices (e.g., a sever, a tablet, a computer, asmartphone, etc.) communicatively coupled to the smart glasses 150, thewrist-wearable device 102, or both. Additional information on the one ormore electronic messages is provided below in reference to FIG. 13D.

In some embodiments, the smart glasses 150, the wrist-wearable device102, or both provide a notification in response to receiving the one ormore electronic messages. In some embodiments, the notification caninclude one or more of an audible indicator 1313, a visual indicator1315, and a vibration 1317 (or any other haptic response). In someembodiments, indicators are provided on either or both of the displaysof the wrist-wearable device and the smart glasses to indicate thehardware components that are being currently utilized. For instance, asdescribed above in reference to FIG. 1F, the display 155 of the smartglasses 150 can provide the user 130 with a video-capturing indicator171 and/or an audio-capturing indicator 173 such that the user 130 isaware that the imaging device 169 and/or microphone of the smart glasses150 are being utilized in conjunction with a video stream. Additionalinformation on the video-capturing indicator 171 and/or theaudio-capturing indicator 173 is provided above in reference to FIGS.1E-1F.

As shown in FIG. 13D, the display 115 of the wrist-wearable device 102displays the one or more electronic messages (e.g., represented withinlive chat user interface 1319, which live chat user interface 1319 canbe overlaid on top of a current part of the ongoing video stream or canbe display independently of the live stream). In some embodiments, theone or more messages are text messages, emojis, GIFs, images, links,etc. (in other words, multiple content types can be provided asreactions from viewers of the live stream). In some embodiments, thewrist-wearable device 102 displays the one or more messages inaccordance with a determination that a message-viewing precondition ispresent. In some embodiments, a determination that a message-viewingprecondition is present is based on sensor data of the smart glasses150, the wrist-wearable device 102, or both. In particular, the sensordata of the smart glasses 150, the wrist-wearable device 102, or bothcan be monitored to indicate one or both of a position of the smartglasses 150 and a position of the wrist-wearable device 102 that iscommunicatively coupled with the smart glasses 150, and the monitoredsensor data can be used to determine when to display, via the display115 of the wrist-wearable device 102, the one or more messages. In someembodiments, a determination that the message-viewing precondition ispresent is based on at least some of the sensor data indicating that thesmart glasses 150 is positioned such that a front portion of the smartglasses 150 (e.g., front portion of the frame that includes the imagingdevice 169) is facing towards the wrist-wearable device 102 (e.g.,towards the display 115 of the wrist-wearable device 102) and/or atleast some of the sensor data indicating that the wrist-wearable device102 is positioned such that the display 115 of the wrist-wearable device102 is facing towards the front portion of the smart glasses 150. Theabove examples are non-limiting. Different message-viewing preconditionscan be used to determine when to display the one or more messages. Forexample, in some embodiments, one or more of the video-viewingpreconditions describe above in reference to FIGS. 1A-12 can be used asmessage-viewing preconditions.

In some embodiments, the one or more messages, when displayed by thewrist-wearable device 102, are synchronized with the video data suchthat the one or more messages are displayed responsive to thetransmitted video data and/or audio data. For example, the user 130 canbe video streaming a concert, a backpacking trip, and/or day-to-dayactivities and the one or more messages can be synchronized such that,when displayed to the user 130, they are responsive to the user 130'sreal-time experience of the event. In some embodiments, the one or moremessages, when displayed by the wrist-wearable device 102, are displayedin the order that they are received (e.g., from the first messagereceived to the last message received, so in a chronological order). Insome embodiments, older messages are presented near the top portion ofthe display 115 and the most recent messages are presented near thebottom portion of the display 115. In some embodiments, the user 130 caninclude a predetermined message delay such that the one or more messagescan be viewed by the user before they are publicly displayed. Forexample, in some embodiments, a user 130 is responsible for monitoring alive chat 1319 and removing inappropriate or vulgar messages beforeother users in the live chat 1319 can view the massages, and thepredetermined message delay allows the user 130 to review the messages.In some embodiments, the user 130 can provide a user input to scroll (asindicated by the up and down arrow) through the one or more messagesdisplayed by the wrist-wearable device 102. In some embodiments, theuser input is provided via a touch command at the display 115 and/oractuation of a button on the wrist-wearable device 102.

As described above in reference to FIG. 12 , in some embodiments, thewrist-wearable device 102 and/or the head-worn wearable device 150includes a built-in user-controlled personal assistant that isconfigured to present information (e.g., audibly read out one or moremessages and/or graphical content, and to also provide indications ofthe viewer that provided the reactions). In some embodiments, the one ormore messages can include text-to-speech (TTS) messages, and thewrist-wearable device 102 and/or the smart glasses 150 causepresentation of audio data (e.g., via the personal assistant)corresponding to received TTS messages via a speaker of thewrist-wearable device 102, speaker of the smart glasses 150, and/or aspeaker that is in communication with the wrist-wearable device 102and/or the smart glasses 150. In some embodiments, the user 130 canselect which speaker is used to present audio data corresponding toreceived TTS messages. Alternatively or additionally, in someembodiments, the speaker used to present the audio data corresponding toreceived TTS messages is automatically selected based on a position ofthe wrist-wearable device 102 and/or the smart glasses 150. For example,if the user 130 has the wrist-wearable device 102 in a raised positionsuch that the display 115 is visible to the user 130, the speaker of thewrist-wearable device 102 can be selected to present the audio data. Inanother example, if the user 130 has the wrist-wearable device 102 in alowered position such that the display 115 is not visible to the user130, the speaker of the smart glasses 150 can be selected to present theaudio data. Examples of raised and lowered positions of thewrist-wearable device 102 are provided above in reference to FIGS.1A-1F. In some embodiments, the speaker used to present audio data isautomatically selected based on a battery level of the wrist-wearabledevice 102 and/or the smart glasses 150. For example, in order to extendthe battery life of each device, the device with the highest batterylevel can be automatically selected to present audio data. In someembodiments, the speaker of the smart glasses 150 is selected forpresentation of the audio data by default (e.g., because the speakers ofthe smart glasses 150 are closest to the user 130's ears and operate asthe best audio source). In some embodiments, the audio datacorresponding to received TTS messages is presented to the user 130whether or not the message-viewing precondition is present. In otherwords, the user 130 does not have to look at the display 115 of thewrist-wearable device 102 to receive audio data corresponding to TTSmessages. In some embodiments, the user 130 can disable TTS messages orpresentation of the audio data corresponding to the TTS messages via thewrist-wearable device 102 and/or the smart glasses 150.

In some embodiments, in accordance with a determination that themessage-viewing precondition is not present, the wrist-wearable device102 ceases to display the one or more messages. When the one or moremessages are once again presented to the user (e.g., after adetermination that the message-viewing precondition is present onceagain), the one or more messages are resynchronized with the recentlytransmitted video data and/or audio data. In other words, the one ormore messages, when displayed to the user 130 via the display 115 of thewrist-wearable device 102, are synchronized such that they are as closeto real-time with the video and/or audio data captured by the smartglasses 150.

In some embodiments, the user 130 provides instructions to terminate thevideo stream. In some embodiments, the instructions to terminate thestream are received at the wrist-wearable device 102. Alternatively oradditionally, in some embodiments, the instructions to terminate thestream are received at the head-worn wearable device 150. For example,an input to terminate the video stream can be received at a frame 157 ofthe head-worn wearable device 150, as described above in reference toFIG. 13B. Alternatively or additionally, in some embodiments, the userinput to terminate the video stream is received via the wrist-wearabledevice 102 (e.g., via a touch command at a display 115 and/or actuationof a button). In some embodiments, the video stream is terminated via avoice command and/or one or more gestures (e.g., hand gestures). Oneother termination techniques used in some embodiments is the use ofcapture triggers (example of which were discussed above), such that adetermination that a capture trigger is no longer present (e.g., user130 is determined to have departed a predefined geofenced area) causestermination of an ongoing video stream.

FIG. 14 illustrates a detailed flow diagram of a method 1400 ofcoordinated video streaming and messaging using a wrist-wearable deviceand a head-worn wearable device, according to some embodiments.Operations (e.g., steps) of the method 1100 can be performed by one ormore processors (e.g., central processing unit 1026 and/or MCU 1052 FIG.10 ) of a wrist-wearable device 102 and/or one or more processors of ahead-worn wearable device 150. The wrist-wearable device 102 and/or thehead-worn wearable device 150, as described above in reference to FIGS.13A-13D, include one or more sensors, a display, a speaker, an imagingdevice (e.g., a camera), and a microphone to perform the one or moreoperations of method 1400. At least some of the operations shown in FIG.14 correspond to instructions stored in a computer memory orcomputer-readable storage medium (e.g., storage 1002, ram 1003, and/ormemory 1050 FIG. 10 ). The example of operations 1410-1430 is (are)performed using one or more processors and/or using instructions storedin memory or computer-readable medium of either of both of the head-wornwearable device 150 or wrist-wearable device 102.

The method 1400 includes receiving (1410) an instruction to use a cameraof a head-worn wearable device to capture video data for a video stream.In some embodiments, the instruction to use the camera of the head-wornwearable device to capture video data for the video stream is receivedat the wrist-wearable device (but can also be received without anexpress user instruction, such as based on a determination that acapture trigger has been satisfied). For example, as described above inreference to FIG. 13A, the user 130 can provide an input at thewrist-wearable device to cause the activation of an imaging device ofthe head-worn wearable device. In some embodiments, the camera of thehead-worn wearable device captures video data that is within a field ofview of the camera of the head-worn wearable device. In someembodiments, while the camera of the head-worn wearable device iscapturing the video data for the video stream, the microphone of thehead-worn wearable device is capturing audio data for the video stream.

The method 1400, after receiving the instruction (1420) to use thecamera of the head-worn wearable device to capture the video data forthe video stream, includes receiving (1423), at a wrist-wearable devicethat is in communication with the head-worn wearable device, one or moreelectronic messages from a viewer of the video stream, and monitoring(1425) sensor data indicating one or both of (i) a position of thehead-worn wearable device and (ii) a position of the wrist-wearabledevice to determine when to display, via a display of the wrist-wearabledevice, the one or more electronic messages. In this description,references to positions of devices should be understood to includeposition and orientation of those devices, as will be apparent to one ofskill upon reading this description in conjunction with the referencedfigures. In some embodiments, the one or more electronic messages arereceived responsive to the video data captured via the camera of thehead-worn wearable device and the one or more electronic messages aredisplayed in the order received. In some embodiments, a determinationthat the message-viewing precondition is present is based on one or bothof (i) at least some of the sensor data indicating that the head-wornwearable device is positioned such that a front portion of the head-wornwearable device is facing towards the wrist-wearable device and (ii) atleast some of the sensor data indicating that the wrist-wearable deviceis positioned such that the display of the wrist-wearable device isfacing towards the front portion of the head-worn wearable device. Forexample, as shown in FIGS. 13C and 13D, the display of thewrist-wearable device does not actively display information (e.g., thereactions from other viewers in conjunction with the live stream) whilethe wrist-wearable device is at or near the user's wrist and, once theuser raises the wrist-wearable device such that a message-viewingprecondition is present, the wrist-wearable device displays one or moreelectronic messages received from a viewer of the stream. Additionalexamples of the message-viewing precondition are provided above inreference to FIGS. 13A-13D.

In some embodiments, the one or more electronic messages includetext-to-speech (TTS) messages, and the method 1400 further includescausing a speaker of the wrist-wearable device or a speaker of thehead-worn wearable device to present audio data corresponding to the TTSmessages. In some embodiments, the speaker of the wrist-wearable deviceor the speaker of the head-worn wearable device is automaticallyselected for use in presenting the audio data corresponding to the TTSmessages based on the sensor data indicating one or both of (i) theposition of the head-worn wearable device and (ii) the position of thewrist-wearable device that is communicatively coupled with the head-worndevice. As discussed earlier, use of position data for purposes ofselecting which speaker to use is one example, other examples can usepower-availability and consumption requirements to figure out whichspeakers should be utilized to best conserve power used by the devices.

The method 1400 further includes, in accordance with a determinationthat the sensor data indicates that a message-viewing precondition ispresent, displaying (1430), on the display of the wrist-wearable device,the one or more electronic messages from the viewer of the video stream.In some embodiments, displaying the one or more electronic messagesincludes displaying a plurality of electronic messages for a pluralityof different viewers of the video stream (e.g., as shown in FIG. 13D,four different users, each identified by a different user name, areshown as having reacted to the live stream by providing textual and/orgraphical reactions), and the plurality of electronic messages aredisplayed in a chronological fashion. In some embodiments, the method1400 includes, in accordance with a determination that themessage-viewing precondition is no longer present, ceasing to display,via the display of the wrist-wearable device, the one or more messages.

In some embodiments, the method 1400 includes, in conjunction withdisplaying, on the display of the wrist-wearable device, the one or moreelectronic messages, displaying a visual indicator reflecting that thewrist-wearable device is in communication with the head-worn wearabledevice (e.g., an example visual indicator 171 is shown in FIG. 13D). Insome embodiments, the method 1400 includes, in response to receiving theone or more electronic messages, causing one or both of the head-wornwearable device and the wrist-wearable device to provide a notificationto a user of the head-worn wearable device and the wrist-wearabledevice, the notification indicating receipt of the one or moreelectronic messages to the user. The notification includes at least oneof a vibration, audible indicator, and visual indicator. Examples of thedifferent indicators and notifications are provided above in referenceto FIGS. 13A-13D.

In some embodiments, the method 1400 includes receiving, via thewrist-wearable device, another user input terminating the video stream,and responsive to the other user input terminating the video stream,causing the camera of the head-worn wearable device to cease to capturethe video data. As mentioned above, a user-input-based termination eventis one example; other examples can make use of capture triggers, suchthat when a respective capture trigger that activated a live stream isdetermined to no longer be present, then the live stream is consequentlyterminated.

The various user interfaces and interactions described above inreference to FIGS. 1A-14 are non-limiting. The various user interfacesand interactions described above in reference to FIGS. 1A-14 can beimplemented on devices with other form factors, including wrist-wearabledevices with other form factors including any of the form factors for awrist-wearable device shown in U.S. Design patent application. Nos.29/740,675 and 29/770,243, each of which is incorporated by referenceherein in its respective entirety and on which any of the userinterfaces and techniques described herein can be presented.

Any data collection performed by the devices described herein and/or anydevices configured to perform or cause the performance of the differentembodiments described above in reference to FIGS. 1A-14 , hereinafterthe “devices,” is done with user consent and in a manner that isconsistent with all applicable privacy laws. Users are given options toallow the devices to collect data, as well as the option to limit ordeny collection of data by the devices. A user is able to opt-in oropt-out of any data collection at any time. Further, users are given theoption to request the removal of any collected data.

It will be understood that, although the terms “first,” “second,” etc.may be used herein to describe various elements, these elements shouldnot be limited by these terms. These terms are only used to distinguishone element from another.

The terminology used herein is for the purpose of describing particularembodiments only and is not intended to be limiting of the claims. Asused in the description of the embodiments and the appended claims, thesingular forms “a,” “an” and “the” are intended to include the pluralforms as well, unless the context clearly indicates otherwise. It willalso be understood that the term “and/or” as used herein refers to andencompasses any and all possible combinations of one or more of theassociated listed items. It will be further understood that the terms“comprises” and/or “comprising,” when used in this specification,specify the presence of stated features, integers, steps, operations,elements, and/or components, but do not preclude the presence oraddition of one or more other features, integers, steps, operations,elements, components, and/or groups thereof.

As used herein, the term “if” can be construed to mean “when” or “upon”or “in response to determining” or “in accordance with a determination”or “in response to detecting,” that a stated condition precedent istrue, depending on the context. Similarly, the phrase “if it isdetermined [that a stated condition precedent is true]” or “if [a statedcondition precedent is true]” or “when [a stated condition precedent istrue]” can be construed to mean “upon determining” or “in response todetermining” or “in accordance with a determination” or “upon detecting”or “in response to detecting” that the stated condition precedent istrue, depending on the context.

The foregoing description, for purpose of explanation, has beendescribed with reference to specific embodiments. However, theillustrative discussions above are not intended to be exhaustive or tolimit the claims to the precise forms disclosed. Many modifications andvariations are possible in view of the above teachings. The embodimentswere chosen and described in order to best explain principles ofoperation and practical applications, to thereby enable others skilledin the art.

What is claimed is:
 1. A method of coordinated video streaming andmessaging using a wrist-wearable device and a head-worn wearable device,the method comprising: receiving an instruction to use a camera of ahead-worn wearable device to capture video data for a video stream;after receiving the instruction to use the camera of the head-wornwearable device to capture the video data for the video stream:detecting an indication of receiving, at a wrist-wearable device that isin communication with the head-worn wearable device, one or moreelectronic messages from a viewer of the video stream; monitoring sensordata indicating one or both of (i) a position of the head-worn wearabledevice and (ii) a position of the wrist-wearable device to determinewhen to display, via a display of the wrist-wearable device, the one ormore electronic messages; and in accordance with a determination thatthe sensor data indicates that a message-viewing precondition ispresent, causing display, on the display of the wrist-wearable device,of the one or more electronic messages from the viewer of the videostream.
 2. The method of claim 1, wherein the instruction to use thecamera of the head-worn wearable device to capture video data for thevideo stream is received at the wrist-wearable device.
 3. The method ofclaim 1, further comprising: in conjunction with displaying, on thedisplay of the wrist-wearable device, the one or more electronicmessages, causing display of a visual indicator reflecting that thewrist-wearable device is in communication with the head-worn wearabledevice.
 4. The method of claim 1, wherein: the head-worn wearable devicefurther includes a microphone, and while the camera of the head-wornwearable device is capturing the video data for the video stream, themicrophone is capturing audio data for the video stream.
 5. The methodof claim 1, wherein the one or more electronic messages are receivedresponsive to the video data captured via the camera of the head-wornwearable device and the one or more electronic messages are caused to bedisplayed in the order received.
 6. The method of claim 1, wherein thewrist-wearable device and the head-worn wearable device includerespective speakers, the one or more electronic messages includetext-to-speech (TTS) messages, and the method further comprises: causinga speaker of the wrist-wearable device or a speaker of the head-wornwearable device to present audio data corresponding to the TTS messages.7. The method of claim 6, wherein the speaker of the wrist-wearabledevice or the speaker of the head-worn wearable device is automaticallyselected for use in presenting the audio data corresponding to the TTSmessages based on the sensor data indicating one or both of (i) theposition of the head-worn wearable device and (ii) the position of thewrist-wearable device that is communicatively coupled with the head-worndevice.
 8. The method of claim 1, wherein a determination that themessage-viewing precondition is present is based on one or both of (i)at least some of the sensor data indicating that the head-worn wearabledevice is positioned such that a front portion of the head-worn wearabledevice is facing towards the wrist-wearable device and (ii) at leastsome of the sensor data indicating that the wrist-wearable device ispositioned such that the display of the wrist-wearable device is facingtowards the front portion of the head-worn wearable device.
 9. Themethod of claim 1, further comprising: in accordance with adetermination that the message-viewing precondition is no longerpresent, causing the display of the wrist-wearable device to ceasedisplaying the one or more messages.
 10. The method of claim 1, whereinthe camera of the head-worn wearable device captures video data that iswithin a field of view of a of the camera of the head-worn wearabledevice.
 11. The method of claim 1, further comprising: in response toreceiving the one or more electronic messages, causing one or both ofthe head-worn wearable device and the wrist-wearable device to provide anotification to a user of the head-worn wearable device and thewrist-wearable device, the notification indicating receipt of the one ormore electronic messages to the user.
 12. The method of claim 11,wherein the notification includes at least one of a vibration, audibleindicator, and visual indicator.
 13. The method of claim 1, whereincausing display of the one or more electronic messages includes causingdisplay of a plurality of electronic messages for a plurality ofdifferent viewers of the video stream, and the plurality of electronicmessages are displayed in a chronological fashion.
 14. The method ofclaim 1, further comprising: detecting an indication of receiving, viathe wrist-wearable device, another user input terminating the videostream; and responsive to the other user input terminating the videostream, causing the camera of the head-worn wearable device to cease tocapture the video data.
 15. A system comprising a head-worn wearabledevice and a wrist-wearable device, the system configured to: receive aninstruction to use a camera of a head-worn wearable device to capturevideo data for a video stream; after receiving the instruction to usethe camera of the head-worn wearable device to capture the video datafor the video stream: detect an indication of receiving, at awrist-wearable device that is in communication with the head-wornwearable device, one or more electronic messages from a viewer of thevideo stream; monitor sensor data indicating one or both of (i) aposition of the head-worn wearable device and (ii) a position of thewrist-wearable device to determine when to display, via a display of thewrist-wearable device, the one or more electronic messages; and inaccordance with a determination that the sensor data indicates that amessage-viewing precondition is present, cause display, on the displayof the wrist-wearable device, of the one or more electronic messagesfrom the viewer of the video stream.
 16. The system of claim 15, whereinthe instruction to use the camera of the head-worn wearable device tocapture video data for the video stream is received at thewrist-wearable device.
 17. The system of claim 15, wherein the system isfurther configured to: in conjunction with causing display, on thedisplay of the wrist-wearable device, the one or more electronicmessages, causing display of a visual indicator reflecting that thewrist-wearable device is in communication with the head-worn wearabledevice.
 18. A non-transitory, computer-readable storage medium includinginstructions that, when executed by one or more processors of awrist-wearable device, cause the wrist-wearable device to: afterreceiving an instruction to use a camera of a head-worn wearable deviceto capture video data for a video stream: detect an indication ofreceiving, at a wrist-wearable device that is in communication with thehead-worn wearable device, one or more electronic messages from a viewerof the video stream; monitor sensor data indicating one or both of (i) aposition of the head-worn wearable device and (ii) a position of thewrist-wearable device to determine when to display, via a display of thewrist-wearable device, the one or more electronic messages; and inaccordance with a determination that the sensor data indicates that amessage-viewing precondition is present, cause display, on the displayof the wrist-wearable device, of the one or more electronic messagesfrom the viewer of the video stream.
 19. The non-transitory,computer-readable storage medium of claim 18, further includinginstructions that, when executed by the one or more processors of thewrist-wearable device, cause the wrist-wearable device to: inconjunction with displaying, on the display of the wrist-wearabledevice, the one or more electronic messages, cause display of a visualindicator reflecting that the wrist-wearable device is in communicationwith the head-worn wearable device.
 20. The non-transitory,computer-readable storage medium of claim 18, wherein the wrist-wearabledevice and the head-worn wearable device include respective speakers,the one or more electronic messages include text-to-speech (TTS)messages, and the non-transitory, computer-readable storage mediumfurther includes instructions that, when executed by the one or moreprocessors of the wrist-wearable device, cause the wrist-wearable deviceto: cause a speaker of the wrist-wearable device or a speaker of thehead-worn wearable device to present audio data corresponding to the TTSmessages.
 21. The non-transitory, computer-readable storage medium ofclaim 20, wherein the speaker of the wrist-wearable device or thespeaker of the head-worn wearable device is automatically selected foruse in presenting the audio data corresponding to the TTS messages basedon the sensor data indicating one or both of (i) the position of thehead-worn wearable device and (ii) the position of the wrist-wearabledevice that is communicatively coupled with the head-worn device. 22.The non-transitory, computer-readable storage medium of claim 18,further including instructions that, when executed by the one or moreprocessors of the wrist-wearable device, cause the wrist-wearable deviceto: in response to receiving the one or more electronic messages, causeone or both of the head-worn wearable device and the wrist-wearabledevice to provide a notification to a user of the head-worn wearabledevice and the wrist-wearable device, the notification indicatingreceipt of the one or more electronic messages to the user.
 23. Thenon-transitory, computer-readable storage medium of claim 22, whereinthe notification includes at least one of a vibration, audibleindicator, and visual indicator.
 24. The non-transitory,computer-readable storage medium of claim 18, wherein causing display ofthe one or more electronic messages includes causing display of aplurality of electronic messages for a plurality of different viewers ofthe video stream, and the plurality of electronic messages are displayedin a chronological fashion.
 25. The non-transitory, computer-readablestorage medium of claim 18, further including instructions that, whenexecuted by the one or more processors of the wrist-wearable device,cause the wrist-wearable device to: detecting an indication ofreceiving, via the wrist-wearable device, another user input terminatingthe video stream; and responsive to the other user input terminating thevideo stream, cause the camera of the head-worn wearable device to ceaseto capture the video data.
 26. The non-transitory, computer-readablestorage medium of claim 18, wherein the instruction to use the camera ofthe head-worn wearable device to capture video data for the video streamis received at the wrist-wearable device.
 27. The non-transitory,computer-readable storage medium of claim 18, wherein: the head-wornwearable device further includes a microphone, and while the camera ofthe head-worn wearable device is capturing the video data for the videostream, the microphone is capturing audio data for the video stream. 28.The non-transitory, computer-readable storage medium of claim 18,wherein the one or more electronic messages are received responsive tothe video data captured via the camera of the head-worn wearable deviceand the one or more electronic messages are caused to be displayed inthe order received.
 29. The non-transitory, computer-readable storagemedium of claim 18, wherein a determination that the message-viewingprecondition is present is based on one or both of (i) at least some ofthe sensor data indicating that the head-worn wearable device ispositioned such that a front portion of the head-worn wearable device isfacing towards the wrist-wearable device and (ii) at least some of thesensor data indicating that the wrist-wearable device is positioned suchthat the display of the wrist-wearable device is facing towards thefront portion of the head-worn wearable device.
 30. The non-transitory,computer-readable storage medium of claim 18, further includinginstructions that, when executed by the one or more processors of thewrist-wearable device, cause the wrist-wearable device to: in accordancewith a determination that the message-viewing precondition is no longerpresent, causing the display of the wrist-wearable device to ceasedisplaying the one or more messages.
 31. The non-transitory,computer-readable storage medium of claim 18, wherein the camera of thehead-worn wearable device captures video data that is within a field ofview of a of the camera of the head-worn wearable device.